# Service bulletin A901342 2035902\-

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10121509
- Published by NHTSA: 2017\-10\-31
- Manufacturer's number: A901342 2035902\-
- Manufacturer's date: 2013\-11\-27
- NHTSA component: ELECTRICAL SYSTEM:IGNITION

## NHTSA's 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.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2013/MC-10121509-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2013/MC-10121509-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Ignition

## Vehicles listed

- 2009 to 2010 AUDI A4
- 2013 to 2015 AUDI A4 ALLROAD
- 2011 to 2012 AUDI A4 AVANT
- 2008 to 2015 AUDI A5
- 2009 to 2013 AUDI Q5

## Other bulletins for the same vehicles and component

- [Update28G6](/bulletins/10250176.md), 2024-02-12, Service bulletin: ELECTRICAL SYSTEM:IGNITION. Ignition Coils
- [28G6UPDATE](/bulletins/10243834.md), 2023-10-10, Service bulletin: ELECTRICAL SYSTEM:IGNITION. Ignition Coils \(NVLW\)
- [A5723082027406\_5](/bulletins/10238172.md), 2023-07-10, Service bulletin: ELECTRICAL SYSTEM:IGNITION:ANTI\-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER. This bulletin provides information regarding the Audi advanced key.
- [A9623822056019\_2](/bulletins/10232049.md), 2023-03-06, Service bulletin: ELECTRICAL SYSTEM:IGNITION:ANTI\-THEFT:CONTROL MODULE. This bulletin provides instructions for when the anti\-theft alarm has gone off for no reason, or did not go off at all. No DTCs are stored.
- [Edition83](/bulletins/10231108.md), 2023-02-06, Service bulletin: ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:IGNITION. 97 no start
- [01139520335611](/bulletins/10225050.md), 2022-10-31, Service bulletin: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:IGNITION. Engine shakes. Some of the Bosch ignition coils installed in the affected vehicles may fail prematurely.
- [01138620336301](/bulletins/10225042.md), 2022-10-31, Service bulletin: ELECTRICAL SYSTEM:IGNITION; ELECTRICAL SYSTEM. Because there are a number of different misfire faults \(unrelated to ignition coil operation\) that could cause the MIL to illuminate, proper Guided Fault Finding \(GFF\) misfire diagnosis must be followed before any ignition coils are replaced.
- [01130820335612](/bulletins/10221965.md), 2022-09-26, Service bulletin: ELECTRICAL SYSTEM:IGNITION; ELECTRICAL SYSTEM. Some of the Bosch ignition coils installed in the affected vehicles may fail prematurely.
- [A0022582045316\_6](/bulletins/10218600.md), 2022-09-01, Service bulletin: ELECTRICAL SYSTEM:IGNITION. This bulletin contains information for diagnosing the Start/Stop system.
- [28 13 21 2017555](/bulletins/10212674.md), 2022-05-31, Service bulletin: ENGINE; ELECTRICAL SYSTEM:IGNITION:ANTI\-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER. Key does not stay or engage in ignition lock

JSON: [/v1/bulletins/10121509](/v1/bulletins/10121509)

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