How to reset the transmission ECU on a Mercedes Benz?
As cars become more and more reliant on software and computer controls, they can become intimidating for the DIY’er. Here’s how to reset the transmission ECU on a Mercedes-Benz E-Class. This article applies to the Mercedes-Benz E-Class and E-Class AMG (2002-2009).
How do you reset the automatic transmission shift memory?
Reset Transmission Memory for increased Power! 1) Turn your key to the right just before ignition. 2) Press the gas pedal all the way down and hold for 10 seconds. 4) Wait for 2-3 minutes before removing key.
How to reset transmission adaptive shifting in Mercedes Benz?
If you race your Mercedes-Benz, it will remember that and keep the gearbox in gear longer. If you drive it gently, it will adapt to that as well and change gears earlier. Turn the key to position 2. You should see all the dash lights come on. Do NOT start the car.
What happens when you reset the transmission shift points?
It is not going to make your shifting abnormal. If your gear shifts are abnormal you have something else going on. Resetting the transmission shift points makes the transmission the same as when the car is out of the factory. Within 30 driving cycles, the ECU will monitor your driving habits and adapt the shifting points to your driving style.
As cars become more and more reliant on software and computer controls, they can become intimidating for the DIY’er. Here’s how to reset the transmission ECU on a Mercedes-Benz E-Class. This article applies to the Mercedes-Benz E-Class and E-Class AMG (2002-2009).
If you race your Mercedes-Benz, it will remember that and keep the gearbox in gear longer. If you drive it gently, it will adapt to that as well and change gears earlier. Turn the key to position 2. You should see all the dash lights come on. Do NOT start the car.
It is not going to make your shifting abnormal. If your gear shifts are abnormal you have something else going on. Resetting the transmission shift points makes the transmission the same as when the car is out of the factory. Within 30 driving cycles, the ECU will monitor your driving habits and adapt the shifting points to your driving style.
What to do if your transmission is stuck in gear?
If your transmission is stuck in gear and you are far away from home, try this: 1 Pull over and turn the car off. Remove the key. 2 Do not press the gas pedal or any other buttons on the car. 3 Wait 20 seconds. 4 Start the car and drive to see if it is out of limp mode.
Can a Mercedes-Benz have a transmission failure?
Very few Mercedes-Benz cars have had complete transmission failure and require transmission replacement. We see these transmission fail in rare cases when water enters the transmission via the oil cooling lines or the radiator on cars equipped with Valeo radiators.
Do you need manual to remove auto transmission?
If you plan on removing your auto transmission anytime soon this is a must-have manual that will walk you through the steps of removal and replacement in an easy to understand format. The tips and cautions presented will help you avoid many of the pitfalls experienced by other Mercedes owners who have attempted this job on their own.
Can you reset the transmission on a Mercedes Benz?
This will make your car fun to drive again, it’s like getting a free tune-up. This procedure applies to all Mercedes-Benz that come with the 5-speed 722.6 and 7 -speed 722.9. This is about 95% of Mercedes-Benz cars on the road today with the exception of models made before 1995. This reset procedure works on automatic transmission only.
Why is my Mercedes-Benz transmission not shifting?
If cracks develop between the two chambers, coolant will mix with transmission oil and it will destroy the transmission. This has been a well-documented issue for Mercedes-Benz cars equipped with the Valeo radiators.
What to do if your Mercedes transmission is leaking oil?
Before you spend hundreds of dollars on a new valve body (will talk more about the valve body in the next step) replace the Mercedes Transmission 13-Pin Connector Adapter Plug + O-rings. The O-ring plug leaks oil and disrupts the communication between the TCU and the valve body. The O-ring is very easy to replace.
How do you reset adaptive shifting on a Mercedes Benz?
This procedure will reset the adaptive shifting points in your Mercedes-Benz automatic Transmission Control Unit (TCU). These simple do it yourself instructions take less than 5 minutes. No tools are required to perform this procedure and make your Mercedes-Benz shift like new.