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Audi A3 8P: Trailer Light Check Functionality

 
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brezelmann01
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Post25-02-2019, 19:39    Subject: Audi A3 8P: Trailer Light Check Functionality Quote

Hello everyone,

Can anyone tell me if the trailer light failure control system works for trailers when it's installed by the manufacturer?

"Thank you!"
pretzelman01
Audi A3 Sportback [8PA], 2.0 TDI CR [CFGB], STH mit FB

[VERKAUFT] Polo 6NF 1.4TDI (AMF) mit nachgerüstetem DPF, STH+FFB, Bj. 2000, 222tkm


Translated on 27-07-2026, 17:07.
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vag-driver
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Post26-02-2019, 9:23    Subject: Audi A3 8P: Trailer Light Check Functionality Quote

It should be like that. However, this has nothing to do with factory or aftermarket installation, but rather with the control unit of the trailer hitch.

On my 2005 A4 B7, I had a Westfalia hitch installed afterwards. It supported the function you're looking for.
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*** Ein Ingenieur muss vordenken. Wenn er anfängt nachzudenken ist es schon zu spät. ***


Translated on 27-07-2026, 17:07.
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brezelmann01
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Post27-02-2019, 20:56    Subject: Audi A3 8P: Trailer Light Check Functionality Quote

Problem erkannt! Die Kennzeichenbeleuchtung hat ebenfalls 5W und hängt parallel zur Rückleuchte. Da merkt das Steuergerät und der A3 nix davon, wenn eine der beiden ausfällt. TolThe sausage.

Sure, no problem!
Pretzelman.
Audi A3 Sportback [8PA], 2.0 TDI CR [CFGB], STH mit FB

[VERKAUFT] Polo 6NF 1.4TDI (AMF) mit nachgerüstetem DPF, STH+FFB, Bj. 2000, 222tkm


Translated on 27-07-2026, 17:08.
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