In these vehicles with an S68 engine, an incorrect diagnosis of the Valvetronic (VVT) may occur

Bulletin number

B120626 (0012810600)

Component

Electrical system

Summary

In these vehicles with an S68 engine, an incorrect diagnosis of the Valvetronic (VVT) may occur. Undercertain operating conditions, the software may detect a short-circuit in the valve control system even thoughthere is no fault. When the above-mentioned fault occurs, the red Check Control warning light ‘Drive system fault’ illuminates.This can result in the intake valves closing gradually, which may lead to misfires while the engine is running.

Owners of these vehicles have filed 52 complaints in the electrical category.