Removing and installing additional brake light bulb M25 — VW
Removing and installing additional brake light bulb M25 on VW: factory workshop procedure. Full factory text, tools and checks.
Workshop procedure for VW — the factory write-up, straight from real workshop data.
📋 Procedure
Removing and installing
additional brake light bulb
M25
Note
Failure of LEDs in additional brake lights:
The individual LEDs (light-emitting diodes) in the additional brake lights are comprised in groups of four LEDs and are supplied with current in groups.
The additional brake light is designed in such a way that the legal requirements are still met in the event that one LED group fails.
If a further LED group fails, these requirements are no longer met according to the legislator.
Due to the failure of one LED group, the intact LEDs are placed under increased strain; it must be anticipated that further LED groups will soon fail.
If more than four individual LEDs in the additional brake light have failed, the additional brake light must be renewed (repair measure).
The spray jet of the rear window washer system is integrated in the
additional brake light bulb
.
Renewing and adjusting spray jet of rear window washer system
Chapter
Special tools and workshop equipment required
Plastic wedge
T10039/1
Removing:
Switch off ignition and all electrical loads, and pull out ignition key.
Attach a strip of adhesive tape
1
to the area of the rear lid above the brake light.
Caution
Make sure the seal is not damaged when removing the additional brake light.
Insert
plastic wedge
T10039/1
1
at top between
additional brake light bulb
M25
2
and rear lid.
Release
additional brake light bulb
M25
by pushing wedge in
direction of arrow
and remove it from rear lid, taking connected wiring length into consideration.
Pull out hose lock
arrow
and pull off hose connection
1
from
additional brake light bulb
M25
.
Release and separate connector
2
and remove
additional brake light bulb
M25
.
Installing:
Note
When installing
additional brake light bulb
M25
, ensure the seal is seated correctly. The seal must not form loops or be damaged.
Connect and engage hose connection and connectors.
Clip brake light back into rear lid, starting at bottom.
Check
additional brake light bulb
M25
and rear window washer system for fault-free function.
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TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
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The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.