Audi A4 2008–2015 — technical service bulletin
Bulletin A901342 2035902- · NHTSA communication 10121509 · issued Nov 27, 2013
Technical service bulletin
communication type
Electrical System
component
2008–2015
model years
20
vehicle entries
Official summary
"Ignition lock faulty" message is displayed in the driver information display with the symbol shown at right. DTCs are stored in the comfort system central control unit. The "ignition lock faulty" message can be triggered by many different DTC entries. Presence of the message does not indicate that the ignition switch is faulty; the message typically has a different root cause. Replacing the ignition switch before completing GFF test plans typically does not correct the condition.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.