Description

Malfunction of the air-pressure sensor / sensor only delivers a constant value

Effects on the driving operation

Unable to use the topography-related shift program

Possible causes

Defective air-pressure sensor (in the E300.1 control unit)

Location

Control unit E300.1

Instruction

Replace the control unit, if a topography-related shift program configuration is required.

Setting conditions for the event

Pressure value has not changed for more than 3 seconds.

Test conditions for the event

No description available.

Final function check

If the defective component cannot be clearly identified, you should try to reproduce the fault:

• Reinstall the component in the vehicle.
• Test the function.

After the fault has been eliminated, the following steps have to be carried out:

• Conduct a test drive with function check.
• Read out the fault memory.
• Check the transmission for leaks.
• Perform a final visual inspection.

These steps are necessary to ensure the entire vehicle functions.

See also:

		Aftersales service index