Quick Answer: How To Reset Mercedes Benz Car Computer?

How do you reset the ECU on a Mercedes C Class?

Resetting the ECU

  1. Step 1 – Disconnect the negative battery terminal. Simply raise the hood and disconnect the negative battery terminal.
  2. Step 2 – Reconnect the terminal. Wait ten minutes, and then reconnect the terminal. Your ECU will be reset. Figure 1. The negative battery terminal is on the left (black).

Will disconnecting battery reset car computer?

Does Disconnecting Battery Reset Check Engine Light? Yes, disconnecting the engine is one method of resetting your check engine light. Other experts recommend turning on the light switch for a few minutes (the lights won’t come on) after disconnecting the engine to drain any remaining current on the computer.

Can disconnecting battery reset ECU?

How do you reset your car’s computer? Will disconnecting battery reset ECU? Can a ECU be reset? Yes, all ECU (Engine Control units) can be reset and be should reset once per manufacturer’s guideline for a smooth relearn process or upon installing a replacement unit.

How do you reset the computer on a Mercedes Actros?

The technique to reset the trip meter on Mercedes Actros: Look for it button the maintenance counter which is located at the bottom right of the display number of kilometers. Press the button, you should see a count from ten to zero appear in the display. Stay press the button for the countdown time.

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How do I reset my Mercedes immobilizer?

How to Reset a Mercedes Key

  1. Reset your Mercedes-Benz key by placing the key in the ignition of your vehicle while the vehicle is turned off.
  2. Pull the key out of the ignition while continuing to hold the “lock” button down.
  3. Use another finger to push down on the “unlock” button five consecutive times.

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

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.

How do I reset my car after replacing the battery?

Switch off your vehicle and unplug all fuses once it has completely warmed up, then detach the battery to cut power. All of the old data should be reset after a few minutes, so reconnect the fuses and restart your engine.

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

When resetting the ECU it will take about 50km (31 miles) to relearn.

Is it bad to reset your ECU?

If not too happy with the vehicle outcomes, or taking the vehicle off-road to different terrain, you may want to consider resetting your engine control module. The process is simple and does not cause any damage to your car. Therefore, there is no need to fret over insurance covers when resetting the control modules.

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What happens if you don’t disconnect the negative battery cable?

The electrical power in a car’s engine is activated by the battery. Contact between the negative battery terminal and the battery, even if the cable is not clamped onto the battery, may reactivate the electrical system within the car.