Flashing brake lights under hard braking

COMMUNITY-SOURCED · MK5 · LIGHTING

The brake lights flash during a panic stop.

Applies to
VW Golf Mk5 (1K: Golf, Rabbit, GTI, R32), 2006-2009 US / 2004-2009 elsewhere.

Not confirmed for
Jetta Mk5 (option names match, but the byte positions aren't confirmed), 2010 Jetta, Golf Plus, Audi A3 8P

Module
09 Central Electronics

Method
Long coding

1 · Before you start

Run a full Auto-Scan and save it. Copy the whole long coding string of 09 Central Electronics and keep it somewhere safe.

2 · VCDS

1. Write down the current 09 long coding.

2. Open 09 Cent. Elect. > Coding - 07 > Long Coding Helper (sub-system '0').

3. Tick 'Emergency Brake Flash Light active' (vag-coding.net, Golf 5: Byte 17 Bit 0).

4. Save.

Notes

No source covers whether this is legal. Owners should check local rules.

Sources: wiki.ross-tech.com · vag-coding.net · vag-coding.net

Reference only. No guarantee of compatibility. MK6IX doesn’t answer coding questions or troubleshoot coding. Back up your original coding before making any change. You code your car at your own risk.