Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI199590 BASE, 2.8 K, AUTOMATICREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLANTI-LOCK BRAKE SYSTEM/TRACTION CONTROLDTC TESTINGDTC 00526 - STOPLIGHT SWITCH
1995 Audi 90 Base, 2.8 K, Automatic
DTC 00526 - Stoplight Switch
1995 Audi 90 Base, 2.8 K, AutomaticSECTION DTC 00526 - Stoplight Switch
- DTC 00526 indicates ABS control module is not receiving a stoplight switch signal. Fault may be caused by the following;
- Both stoplight bulbs out.
- Open circuit or short to ground in stoplight circuit.
- Faulty stoplight switch
- Faulty ABS control module.
- Ensure stoplight bulbs are okay. Check stoplight switch operation by checking measuring value block display field 05 (display field 06 on Quattro models) with VAG 1551. Check stoplight circuit for open or short to ground. See WIRING DIAGRAMS .
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.