Lexus Won T Start After Changing Battery? The 139 Latest Answer

Despite all technological advances, there are currently no car batteries that can last forever. Small things to look out for are your headlight dimming, how old the battery is in your Lexus and whether or not your Lexus has needed a jump start. If these apply to your Lexus, it might be time to get a new battery. Ideally, you would take your Lexus to a trusted and experienced Lexus precision service mechanic, but if the situation calls for you to change the battery in your Lexus yourself, the rules below should be followed. Replacing a Lexus battery is quick and easy, and can usually be done with a minimum of tools.

The most important thing to do before you start is to make sure that the Lexus battery needs to be replaced

Look for blue or whitish residue around the connector – removing this residue can sometimes solve common problems. Note: Do not touch the residue powder with your hands as it can often contain the dried form of sulfuric acid, which is extremely corrosive to skin.

Make sure the battery could be fully charged by driving non-stop for 30 minutes. Electronics should also be turned off, including the stereo, air conditioning, etc.

Take a look at the alternator. If your Lexus model also has a battery gauge, the charge maintained by the alternator should be around 13.8 – 14.2 volts with the engine running if the system is working properly. With the engine off and no additional load, the battery should have a charge of about 12.4 – 12.8.

When you need to replace the battery in your Lexus it is important that you choose the right one for the vehicle. Some retailers require a fee to be paid if you don’t bring the old battery with you.

Before removing the battery in your Lexus:

Park on a level, flat surface that is a safe distance from open flames or traffic sparks. Apply the parking brake. Equip yourself properly with gloves and also goggles. Unplug the cigarette lighter and plug the memory keeper back in. If you misplace the Memory Keeper, make a note of any electronic PINs that may be affected.

Out with the old, in with the new:

Find the location of the battery on your Lexus. Located on either side of the frame, it is in the shape of a rectangle with two cables attached to it.

Find the battery posts. The terminal with the plus sign + is the positive terminal, the terminal with the minus sign – the negative terminal.

Disconnect the negative pole in your Lexus. It slips off easily when the negative clamp has been loosened with a wrench. Be sure to disconnect the minus before the plus to avoid short circuits.

Next, disconnect the positive pole.

Pull out the old battery and put the new one in its place. Reconnect the clamps – positive first, then negative.

Tighten the terminals securely with a wrench.

Close the hood firmly and then start your Lexus.

Check that all devices are working properly, especially the electronics.

Dispose of the old battery properly according to Toronto regulations.

If you’re unfamiliar with battery replacement and don’t want to do it yourself, call Ken Shaw Lexus in Toronto and let our Lexus precision service personnel take care of the problem.

A car has never broken down at the “right time”. Whether you’re in a car that won’t start or preparing for the future, this list can help you figure out what’s wrong with your car. Take a look at these 6 most common reasons why you can’t tell if any of these symptoms match your car’s problem.

Warning: If your car won’t start, avoid turning the key for long periods of time. In cold weather it seems to work if you try to crank the engine for a while, but if you try to crank the starter for more than 15 seconds you can damage the starter.

If you turn the key and the engine does not start:

Most likely you have an electrical problem.

Dead battery

Your battery could be dead for a number of reasons. This is the most common reason for a car’s death and therefore the best reason to leave jumper cables in your car. Once you jump start your car, the alternator should charge the battery as long as the car is running.

If this problem occurs frequently, you may be able to fix the problem by removing corrosion that has built up around the battery posts. If this does not solve the problem, you will need to replace the battery.

Problems with the starter motor

If you can locate the starter under the hood of your car, you can check if it is the source of the problem. If you don’t hear a click when you start the engine, the problem may be a dead battery. If you hear a click but the engine won’t start, the starter motor may not be getting enough power.

With your owner’s manual and a voltmeter, you should be able to test functionality.

Defective or damaged ignition

Similar to the starter motor, a broken or damaged ignition switch can prevent your car from starting. If your headlights turn on but your car won’t start, it means your battery is charged but either the starter or the ignition is the problem.

If the starter or ignition is the problem, a starter motor can be bypassed with a charged battery.

If the engine starts but the car does not start:

When an engine cranks but won’t start, you know your electrical system is fine. In order for the car to start properly, it needs a few ingredients: spark, air, fuel and compression.

Fuel:

If you suspect the problem is fuel related, there are a few solutions. If the weather is cold enough, your fuel line may have frozen and would need to be thawed. Two other common solutions are:

Gas tank is empty

Even if your gas tank doesn’t indicate that the tank is empty, this could still be the problem. An improperly calibrated fuel gauge can cause you to run out of gas.

Fuel filter needs to be replaced

Check your owner’s manual for how often or how long ago your fuel filter should have been changed. A clogged fuel filter prevents gas from reaching the engine. If you frequently run your car dry, your fuel filter could look a lot worse.

no spark

If your car cranks but won’t start, you may not be getting spark. A spark is used to ignite the fuel so the car can start. It is possible to check for a spark yourself, but this is probably beyond the ability of the average driver and should be left to a mechanic.

If you are having trouble starting your car, H&H Mobil can take your car to the shop and perform a full diagnosis to determine if one or more of these reasons are causing problems with your vehicle.

If any of the above reasons are preventing your car from starting, contact H&H Mobil today to have a professional look at your car and get you back on the road safely as soon as possible.

You want to start your car, but when you turn on the ignition, your car won’t start – and your stomach sinks. When your car won’t start, it’s often due to a battery or alternator malfunction. If it’s one of those things, it can be relatively easy to tell which one.

Battery or Alternator: What Causes the Problem?

At its simplest, starting and running an engine is a three-step process. First, the battery delivers a surge of current to the starter. This starts the engine, which turns the alternator on. Finally, the alternator completes this cycle by charging the battery.

Use the process of elimination to find the culprit by bypassing the role of the battery and jump-starting your car. If the engine starts but dies immediately, your alternator is probably not keeping your battery charged. If a jump starts and keeps your car running, but the car won’t restart under its own power, a dead battery is likely your answer.

Signs of a bad battery

Look for these common dead battery symptoms:

Are the dashboard lights dimmed? First check the dashboard battery gauge. The battery should also be charged when the vehicle is switched off. If the dashboard lights are dim, there is probably something wrong with your battery. Try turning on your wipers, lights, or power windows. Then make sure these are all turned off and try starting the car again. Check for battery corrosion. If it still won’t start, use a rag to gently wipe any corrosion off the battery and have someone start it. After letting the engine run for a while, turn off the car. If you can’t get it to restart, that’s a sign the alternator is doing its job of keeping the battery running while the engine is running, but the battery isn’t holding the charge when the alternator has been stopped. The car battery could be old. As batteries age, they become less able to hold a charge because the metal inside corrodes. On average, car batteries last between 3 and 5 years. [4] Eventually, the battery state of charge will drop to the point where no matter how much current the alternator gives it, the battery cannot hold enough current to start the car. However, there are steps you can take to extend the life of your car battery. Your radio will not turn on. When your ignition is on, the battery should be able to power your radio, headlights, windshield wipers, and other electronic components. If you notice your radio display or headlights flickering or dimming, there’s a good chance your battery isn’t charging well. Your car starts and dies instantly. This can be for a variety of reasons, but checking your battery is the best place to start. This is a strange problem that usually only occurs on certain vehicles and is due to the battery only having enough voltage to start the car. Your battery is bloated. If your battery is swollen, you should be able to tell thanks to the manufacturer’s design: you’ll be able to easily spot bulges in the battery’s casing. This problem occurs when your alternator has overcharged the battery due to a bad voltage regulator.

Signs of a bad alternator

If the above steps show that the battery is working, it’s time to take a closer look at the alternator. There are certain bad alternator symptoms to look out for. Find out how to tell if your alternator is bad¹²:

Weak interior lighting. When driving the vehicle, pay attention to the brightness of the interior lights. If the dashboard starts to darken, the alternator is probably to blame. Weak or too bright headlights. Do you notice that your headlights get brighter when you accelerate and get dimmer when you stop? This is often caused by the alternator not keeping the battery sufficiently charged. growling sounds. Did you hear a growling noise before the problems started? This sometimes happens before an alternator fails. Smell of burning rubber or hot wire. Are there any signs of your alternator overheating, such as: B. the smell of burnt rubber or hot wires? If so, it’s time to replace it. Test the alternator. Some may recommend running the engine with the battery disconnected to test the alternator. However, this is not a good idea as it could damage your vehicle’s electrical system and cause major problems. Learn how to test an alternator.

Can you drive with a defective alternator or battery?

While your car can run with a faulty alternator for a short period of time, doing so involves risks and can be dangerous for you and everyone else on the road. Driving with a bad alternator can cause a variety of problems in other parts of your car, including the engine and electrical components. Also, your car’s battery will eventually discharge which will cause your car to die. Unless you have the resources to hop your car and find yourself in a remote area, this could leave you stranded. Your vehicle can also lose power from its power steering, which can cause you to lose control of your car. For these reasons, it is best to have your alternator repaired to protect yourself and other road users³

Repairing your battery or alternator can be an expensive repair. Learn how to find the right mechanic to work on your vehicle. Make sure you have roadside assistance so you can get help if your car won’t start.

Sources:

[1] “Is your car battery dead?” autozone.com/diy/battery/is-your-car-battery-dead Retrieved February 28, 2022.

[2] “10 Warning Signs Your Car Battery Is Dying”, valleyhondadealers.com/blog/10-warning-signs-your-car-battery-is-dying/ Retrieved February 28, 2022.

[3] “Can a car run with a bad alternator (Risks of Driving with a Bad Alternator)”, Jeffery Ekweghi, autovfix.com/can-a-car-run-with-a-bad-alternator-risks-of- Driving-with-a-bad-alternator/ Retrieved February 28, 2022.

[4] https://www.aaa.com/autorepair/articles/how-long-do-car-batteries-last

Additional resources on car issues:

Disclaimer:

The information contained is for informational purposes only. It is not legal, tax, financial or other advice, nor does it replace such advice. The information may not apply to your specific situation. We have tried to ensure that the information is correct, but it may be out of date or even inaccurate in some cases. It is the reader’s responsibility to comply with all applicable local, state, or federal regulations. Nationwide Mutual Insurance Company, its affiliates and their employees make no warranties about the information or any guarantees of results and accept no liability in connection with the information provided. Nationwide, Nationwide N and Eagle and Nationwide is on your side are service marks of Nationwide Mutual Insurance Company. © 2022 Nationwide

We’re sure you already did this as soon as the problems started, but check to see if you may have left the vehicle’s interior or exterior lights on, or if a door wasn’t fully closed. If the lights did not cause the problem, open the hood and check the battery terminals. If you see corrosion (white powdery substance) on the connectors, all you might need to do is a quick scrub with a toothbrush and some baking soda solution to ease the connection. Still not the problem? Let’s look at the age of the battery. The lifespan of a car battery is about 4-5 years. If your battery is less than 4 years old and has no other problems, have your problem diagnosed as soon as possible. If it is the battery then you may have a valid warranty and possibly a replacement option. If the diagnostic comes back that your battery is fine, it may be a bad alternator.

An alternator keeps your battery charged. So if everything seems fine with your battery but is not retaining charge, the next step is to check the alternator.

First of all: When replacing the battery (or batteries), it is essential to observe the vehicle manufacturer’s operating instructions, as the information given here only serves as a rough guide.

How does the battery energy management system (BEM) actually work?

The frequent switching on and off of the engine, combined with the increased energy requirement of comfort functions such as heated seats, navigation systems, etc., poses major challenges for start-stop batteries. For this reason, automobile manufacturers have developed intelligent battery energy management systems (BEM) that monitor the car battery using sensors. This should ensure a long service life despite the higher load.

If the battery no longer provides the desired performance, the system registers a “Battery defective” and a replacement is required.

It is important to ensure that the old battery is replaced with a battery that is equivalent in terms of technology, performance class and size:

An AGM (Absorbent Glass Mat) battery must always be replaced with another AGM battery. In an identical housing and similar performance class. PS: Minor deviations in capacity or performance during a cold start have no effect on the safe start and the optimal power supply of the on-board network.

An EFB battery (Enhanced Flooded Battery) should at least be replaced with a faultless EFB battery or possibly with an AGM battery. In an identical housing and similar performance class. PS: Minor deviations in capacity or performance during a cold start have no effect on the safe start and the optimal power supply of the on-board network.

When changing the battery, does the installation of a new battery have to be reported to the Battery Energy Management System (BEM)?

Depending on the make of car and the functionality of the respective system (open or closed), modern vehicles with Battery Energy Management (BEM) may or may not require or recommend registering the new battery.

If the new battery is not registered, error messages may appear on the on-board computer and comfort applications may not function or may only function to a limited extent. Displayed error messages can usually be reset by deleting the error memory. When the new battery is registered, it usually takes a few days for the system to recognize the new battery condition and automatically reset the error messages.

Great question. To reset the ECU you can either remove and reinstall the positive terminal on the battery or use an OBD-II scanner.

The first method requires a small wrench to loosen the screw on the battery post. Just remove the cable and leave the car for at least five minutes. Then reconnect the cable and tighten the clamp. Start your vehicle and check if the dashboard lights are off.

The second method requires an OBD-II scanner. Plug it into your vehicle’s OBD-II port, typically located under the steering wheel. Error codes are displayed. You then have the opportunity to delete the errors from the system. Then start your car to find out if the fault lights are off.

Note that if you see persistent error signs after changing the battery, this could be a sign that your controller itself has a problem – or that there is a different problem altogether. Most ECUs are self-learning and should reset themselves after learning that a new battery has been installed.

If you get stuck, consult a mechanic for diagnostic assistance. You can pay anywhere from $50 to $150.

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Good luck with your car!

If you take your car for an emissions test, the technician will likely ask you to reset your computer. This is a common procedure, but do you know how long you should wait before driving your car again?

You must drive your car a distance of about 100 miles or more after resetting the computer to pass an emissions test. This is because the computer takes some time to relearn your driving habits and make the necessary adjustments.

How long do I have to drive my car after resetting the computer?

After resetting your computer to pass an emissions test, you should drive about 100 miles or more to allow the computer to relearn your habits. If you don’t have time for this, there are a few things you can do to pass the test.

First, make sure your car is warmed up before taking it to the test. That means driving around for at least 30 minutes to get the engine up to operating temperature.

Second, avoid short trips in the days leading up to the test. These types of rides don’t give the computer enough time to adjust properly.

Third, keep an eye on your gas mileage. If it drops sharply, it could be an indication that your car isn’t running as efficiently as it should.

What are the consequences of resetting my car’s computer?

If you reset your car’s computer to pass an emissions test, you’ll face some consequences.

For one thing, it can void your warranty. And second, it’s important to understand what exactly is being reset when you do this. Otherwise, you could end up doing more harm than good.

Most cars have two types of computer systems: the Powertrain Control Module (PCM) and the Emission Control Module (ECM). The PCM is responsible for controlling the engine, transmission, and other important systems.

The ECM, on the other hand, is responsible for monitoring and regulating the emissions system.

Resetting any of these modules will result in all possible settings being reset to their defaults. This includes things like fuel injection timing, idle speed, and transmission shift points. In other words, your car is essentially starting from scratch.

It’s also important to note that if you’re caught resetting your car’s computer to pass an emissions test, you could face legal penalties.

If I don’t drive my car often, will that affect the emissions test results?

Assuming you don’t drive your car often, this shouldn’t affect the emissions test results. The computer will need to be reset if the car hasn’t been driven in a while, but as long as you follow the correct procedure it should be fine.

Just make sure you give yourself enough time to complete the drive cycle before taking the car to the test.

What happens if I don’t drive my car long enough after resetting the computer?

If you don’t drive your car long enough after resetting the computer, it’s possible for the emissions test to come back as failed. This is because the computer hasn’t had enough time to run all the tests properly.

In this case, you will probably need to reset the computer again and use a different drive before running the test again.

What is an Emissions Drive Cycle?

A drive cycle is a specific set of driving conditions required for the computer to pass all tests properly. This includes things like cold starting the car, driving at different speeds, and idling for long periods of time.

The drive cycle can vary depending on the make and model of your car, so it’s important to consult your owner’s manual before attempting it. However, most driving cycles last between 30 and 45 minutes.

Remember that once the drive cycle is complete, you must let the car cool down for at least an hour before taking it to the test. Otherwise the results could be falsified.

How long does it take to reset an EVAP code?

If you have an EVAP code, it can take up to two weeks for the light to reset itself. However, if you want to reset it sooner, you can do so by disconnecting the battery for at least 30 seconds. Keep in mind that this will also erase any other codes that may be stored on the computer.

Can you pass emissions with stored codes?

No, you cannot pass emissions with stored codes. The computer must be reset in order to clear the codes and perform all tests properly. Otherwise, the emissions test will likely come back as failed.

How long does it take for an O2 sensor to reset?

It can take up to 800 miles to reset an O02 sensor. However, this differs depending on the make and model of your car. See your user manual for more information.

Can you pass emissions when the service engine light is on?

No, you cannot pass emissions when the service engine light is on. The light indicates that there is an issue with the emissions system that must be addressed before the test can pass.

Why do I have codes but no check engine light?

If you have codes but no check engine light, it is possible that the codes are from a previous issue that has since been resolved. However, it is also possible that there is a problem with the computer itself. In any case, you need to have the car checked by a mechanic to be sure.

Can I drive my car if it fails the emissions test?

Assuming your car fails emissions testing, you can still drive it. However, you may face legal penalties if you are caught driving a car that does not meet emissions standards.

It’s important to note that some states require cars to pass an emissions test before they can be registered. If your car doesn’t pass, you won’t be able to register it until the problem is resolved.

How often do I need to test my car’s emissions?

The frequency of emissions tests varies from state to state. However, most states require cars to be tested every one to two years.

What are the consequences of failing an emissions test?

If you fail an emissions test, you may need to have your car repaired at your own expense. Some states may require you to retake the test even after the repair.

What are the consequences of driving with an unreset computer?

If you are caught driving with a computer that has not been reset, you may be fined. However, the consequences vary from state to state.

What is an emissions test pass score?

A passing score for the emissions test varies from state to state. However, most states require your car’s emissions to fall below a certain level in order to pass. Consult your local DMV for more specific information.

Do car computers reset themselves?

No, car computers do not reset themselves. However, they can be reset by disconnecting the battery or using a special tool called a code reader.

Conclusion

If you’re wondering how long you need to drive after resetting the computer to pass an emissions test, the answer is that it depends on a few factors. However, in most cases you will need to let the car cool down for at least an hour before testing again.

Also, keep in mind that you may need to complete a drive cycle to properly reset the computer. Consult your owner’s manual or a qualified mechanic for more detailed information. Finally, remember that you cannot pass emissions with codes stored or with the service engine light on.

These articles might also interest you:

How to reset the memory of a car computer

Can you pass emissions when the check engine light is on?

How to illegally pass the smog test?

It’s easy to overlook, but one of the most advanced technologies in your Lexus is the key fob. Computer technology has resulted in tags that help deter theft while making your driving experience more comfortable. Nowadays, the key rarely has to leave your pocket or wallet. But when this advanced driving tool encounters problems, it can be surprising and frustrating. In fact, one of the most common problems with keychains is the need for reprogramming. This can happen if the fob battery dies or if you get a replacement fob. In either case, there are steps you can take to reprogram the key and make it work normally.

replacing a battery

Perhaps the most common reason for reprogramming a key fob is that the battery has died. Unfortunately, if you replace a battery, the fob will forget its previous programming and still not work with the vehicle. The good news is that there is a trick of sorts to reconnect the keychain. Before attempting this, it is important to understand that this method will only work with a key fob that has been previously paired with the vehicle. If you have a new trailer, continue to the next section.

Assuming you’ve already replaced the battery in the key fob, your first step should be to reset the vehicle’s computer. You can do this by disconnecting the battery for at least 30 seconds. When you’re done, reconnect the battery.

Next, put your key in the ignition and switch it to ON.

Then turn the key to OFF.

Turn it ON again, and then try to lock the door with your hand while pressing the lock button on the remote control. Then turn the ignition OFF again.

Now remove the key from the ignition lock. Insert it into the driver’s door and use the key and buttons to open and lock the door at the same time. Repeat this process for a total of three lock/unlock cycles.

Take the key out of the door and close the door. Try unlocking the doors with the remote control. If that works, open the door and start the car. If it starts, then you have been successful! If it doesn’t work you may have to repeat the process starting with the key in the ON position. (You don’t have to repeatedly reset the vehicle’s computer). In some cases, you may have to go through the process a few times before getting a successful connection.

Programming a new key

If you replace a key or get a new replacement key, you cannot use the lock/unlock method. Instead, the new key fob has to be programmed using software. Let’s pause before we get into that. Programming a new key fob requires special equipment. In particular, you need an OBD2 to USB cable, which must support the VIM communication protocol. You will also need a working key fob. Without all these tools, the method will not work. The good news is that you can always take the new key to a certified mechanic. You have the tools, and although you will be charged for a service, you can rely on it to work.

But if you’re willing to do it yourself, this is how you program a new key fob.

You start by installing the Toyota TIS Techstream software on your computer. Technically, you can use any Windows computer, but it’s much easier with a laptop computer. At the end there will be a cable that goes straight from the car to the computer.

With your software installed and running, use your OBD2 cable to connect the car to the laptop. For the two to communicate, press the engine start button twice without putting your foot on the accelerator. This turns on the car computer without actually starting the engine.

You should be able to connect to your vehicle in your TechSTReam software. The program will automatically detect your car and you can use the information displayed to confirm that you actually have a good connection.

Now you have the main menu on the screen. You want to use it to get to Smart Access. From there select Utility and then Smart Code Registration.

Follow the on-screen instructions. They will guide you through the process of registering the new fob. You will go through a series of steps involving both keys and once complete the new fob should be registered and working. If you need to register more than one key, you must do them one at a time.

Visit Krauses Automotive

We definitely understand that we’re trying to save money and take the DIY approach. If things get tricky or you want to save yourself trouble, professional key programming is one of Krause’s services. We’re the friendliest, most professional auto shop in Lewisville and we’re always happy to take care of your Lexus. Call us today or fill out our online form. We’ll answer your questions and can schedule your service to ensure you have full access to a working, reliable vehicle.

We recommend car owners to pay special attention to their batteries after three years of installation.

When your battery starts to drain, the first thing you’ll probably notice is that the car sounds sluggish when you try to start it. This is an important warning sign that should not be ignored. If you ignore it, you can expect the following:

1. The engine cranks but does not start

This is most likely the result of a dead battery – it could also be a problem with the engine ignition or fuel system. It’s also possible that loose or corroded battery posts have created an unreliable connection that is preventing current from the battery from reaching the starter motor. It could be that the battery is old, or that lights or accessories have been left on, or that a component of the car’s charging system, such as the B. the alternator fails.