New Beetle GLS L4-2.0L (AZG) (2002)
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Brake Light Switch: All Technical Service Bulletins
Electrical - Glow Plug Lamp/Brake Lights Inop/DTC P0571
94 06 07
August 1, 2006
2012628
Condition
EPC/Glow Plug Light On, DTC P0571 Stored in ECM Memory and/or Lack of Brake Light Functionality
Customer may state EPC/Glow Plug Light On and/or brake lights inoperative or intermittent.
DTC P0571 Brake Circuit -F- Implausible Circuit stored in ECM Memory
Vehicles Affected
Technical Background
Condition may be caused by sensitive software or improperly installed brake light switch due to imprecise repair instructions.
Production Solution
No production change required.
Service
Diagnosis
If EPC light -K132- or glow plug light -K29- is ON:
^
Go to Section A.
If brake lights are not operating correctly:
^
Go to Section B.
Section A - EPC or Glow Plug Light ON
^
With key ON/engine OFF, depress brake pedal to verify proper brake light operation.
If brake lights are not operating correctly:
^
Go to Section B.
If brake lights are operating correctly:
^
Using VAS 5051/5052, check Engine Control Module (ECM) for DTC P0571.
If displayed DTC is not P0571:
^
Condition is not brake light switch related. DO NOT continue with this technical bulletin.
If displayed DTC is P0571:
^
Print GFF log and clear DTC.
