How Do You Reset A Mercedes Computer After Replacing The Battery?

Do you need to reset computer after replacing the battery?

There is no need to reset the computer per say, but if you had any error codes that indicated a problem existed; then you’ll need to have a professional mechanic complete a check engine light inspection.

How do I reset my car after replacing the battery?

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1. Detach the battery cable for two to three minutes.
2. Reconnect the battery and start the car.
3. Drive the car for at least 10 miles to let the engine control units find any potential problems.

How do you reset a Mercedes battery?

To reset the ESP warning follow this procedure:

1. Start up your Mercedes-Benz.
2. Turn the steering wheel all the way to the left and hold it there for two seconds.
3. Turn the steering wheel all the way to the right and hold it there for two seconds.
4. Repeat procedure one more time.
5. Turn off the car and restart it.

How long do you disconnect battery to reset computer?

Because some of the electrical current is preserved in the computer for a while afterward, most sources recommend leaving the battery disconnected for at least 15 minutes to make sure the computer forgets the code before you reconnect the battery.

Do you need to reprogram key fob after changing battery?

No. You do not need to reset or reprogram your key fob after replacing the cell. Your key fob does not use a battery.

How long does it take for a car computer to reset?

The readiness monitors will remain until the car has been driven long enough for the computer to evaluate the various system and sensors. The amount of time can vary based on the vehicle. In some cases it can take up to 100 miles for all of the computer monitors to completely reset.

Will disconnecting the battery reset the ECU?

A. It depends on the car’s age and type of ECU used. On some older cars, disconnecting the battery will reset the system but in most new cars it does nothing, except potentially reset the clock and radio station presets.

How do you reset the battery on a Mercedes workshop?

Here is a simple test you can perform if you get Battery Defective message at start up. Let the car run for about 10 -15 minutes. Then go turn off the car, make sure all the light are off and nothing is on for a 30 seconds or so. Then start your car back up again.

Why is my battery light on after changing battery?

An illuminated battery light could be due to a number of issues, including: A loose or corroded battery cable. A problem with the alternator or voltage regulator. Damaged cells or plates inside the battery.

Can you change a Mercedes battery?

For the DIY car enthusiast, battery replacement on a Mercedes-Benz is a fairly easy task to master. All you need is a replacement battery and a few basic tools. Beyond that, you need to locate where the battery is in the vehicle and know how to disconnect it to make way for the new one.

What battery terminal Do I disconnect to reset computer?

Disconnect the negative battery cable and then the positive cable with a combination wrench. Clean the battery posts and terminals with the post and terminal cleaning tool, so you have a good connection when you’re done.

What happens if you disconnect the positive terminal first?

It’s important to disconnect the negative side of the battery first, otherwise you can cause an electrical short if the positive is removed first.

Why won’t my key fob work after I changed the battery?

If your car key remote works after replacing the battery, then you’re done. You’ve fixed the problem, and you can go back to using your key fob as usual. If the remote still doesn’t work, there could be another problem with the remote, like broken battery contacts or a problem with the buttons.

How do I reset my key fob?

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1. STEP 1-Turn on the ignition. You should sit in the driver’s seat with both the ignition key and the key fob with all doors closed.
2. STEP 2-Press the lock button.
3. STEP 3-Turn off the ignition.
4. STEP 4-Repeat the process with other key fobs.
5. STEP 5-Restart the process.

Can a car computer reset itself?

The car’s internal computer only resets after a set period where it checks all of its sensors once more. The reset can happen automatically after around 10 to 20 cycles. A cycle is a phase where you turn on the car and turn it off again. For other vehicles, you’ll have to drive around 50 to 100 miles before it resets.

How do I reset my drive after ECU?

You will need to drive the car ‘gently” after a reset to enable the ECU to relearn the systems now. The other thing, if you disconnect the battery for the reset, you need to configure all your radio presets and any others in the car. If you do disconnect the battery, the longer the better but at least an hour.

How much does it cost to reset a car computer?

The pricing for this can vary depending on the amount of work to fix it and the parts needed. Generally, this can be between $80 and $180. If you GPS continues to steer you of course and you end up stranded in a dark, creepy forest, it might be worth investing in a roadside assistance membership.

How long does it take for ECU to relearn?

Also, it depends on what is being relearned. Some things, like short term fuel trims can be learned in as little as 20 miles. Other things like long term fuel trims will take longer, maybe 80 to 100 or more miles. Speaking generally, a modern car ECU will begin to relearn things immediately.

How do I reset my Mercedes warning light?

The first way to reset a check engine light on your Mercedes-Benz is with a scanner. If you have one, simply plug it in, read the related codes, and press “clear” or “reset.” So long as the code issue has been resolved, it should go off.

How do I reset Mercedes service exceeded?

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1. Turn key in ignition switch to position “1”
2. Press system selection button (S110s3) repeatedly until the basic display (kilometer reading or temperature display) or speed display is shown in the multifunction display (A1p13)
3. Briefly press the trip odometer reset button (A1s3) 3 times.