Action in service

The following applies for B38:

• Set Valvetronic counter to 0 using tester job, then perform Valvetronic run-in test.

If not OK, run through

• Check wiring harness between Valvetronic servomotor and DME
• Replace Valvetronic servomotor. Then set Valvetronic counter to 0 using tester jobs

Following applies to all other versions:

• Perform running-in phase.
• Check wiring harness between Valvetronic servomotor and DME.
• Replace Valvetronic servomotor. Then perform running-in phase.