Reverse light misery.

[Deaky]

Do you know where the trailer module is? Try unplugging it

 

[k3ogh]

Do you know where the trailer module is? Try unplugging it

I've also tried that, its a CFC one, all lights up as it should as well, i looked upnwhat the lights meant within its manual, its very strange.

 

[k3ogh]

Do you know where the trailer module is? Try unplugging it

Does anything need coding when adding tow bar electrics? Might be worth me getting someone to check that?

 

[Deaky]

Hmmm they don’t usually have lights on. Can you post a pic?

 

[manfrotto]

If you have VCDS you could do a block map dump to see what the ECUs are reporting with reverse gear engaged (and to see if it thinks a trailer is attached etc)
eg
BCM ECU


Trailer ECU

 

[k3ogh]

Hmmm they don’t usually have lights on. Can you post a p

 

[k3ogh]

Hmmm they don’t usually have lights on. Can you post a pic?

According to this video link it means all is well...

 

[k3ogh]

If you have VCDS you could do a block map dump to see what the ECUs are reporting with reverse gear engaged (and to see if it thinks a trailer is attached etc)
eg
BCM ECU

View attachment 306493
Trailer ECU
View attachment 306494

I Dont have it unfortunately, just trying to rule something simple out, which no doubt it is

 

[Phil_j89]

They do normally light up.

Have you tried disconnecting / reconnecting the 12v battery

 

[k3ogh]

They do normally light up.

Have you tried disconnecting / reconnecting the 12v battery

I have bud yea, this is really starting to drive me nuts

 

[k3ogh]

Thanks for all the interaction so far! Im sure this can be worked out

 

[k3ogh]

Just a thought, i have fitted LED number plate lights and it throws a warning on the dash, would it be worth putting the halogen ones back in to rule out any interference?

 

[The Bear78]

I'm assuming that the light on the module only indicates the health of the tow bar wiring and not the original reverse light wiring. It could be a break in the wire in a section not monitored by the module ie. the original reverse light wiring?

 

[JumpShip]

I didn't think number plate lights were on the monitoring circuit? Not on my t5.1 anyway .

 

[k3ogh]

I didn't think number plate lights were on the monitoring circuit? Not on my t5.1 anyway .

Is on my 6.1 bud

I'm assuming that the light on the module only indicates the health of the tow bar wiring and not the original reverse light wiring. It could be a break in the wire in a section not monitored by the module ie. the original reverse light wiring?

Very possible, the van still knows its in reverse though, sensors work and the discover media screen also changes.... driving me crazy now

 

[DXX]

I will give that a go, lost light earlier, am i right in thinking i can put it reverse with just the batrery on and the light should come on?

Have you done it yet?

 

[manfrotto]

#k3ogh
- Did you take your van for its MOT anyway, or are you fixing the reversing light first?

 

[k3ogh]

Have you done it yet?

No mate, will dig deeper at the weekend

 

[k3ogh]

#k3ogh
- Did you take your van for its MOT anyway, or are you fixing the reversing light first?

No, i want to fix the issue 1st, i payed the lad for the missed apointment though

 

[k3ogh]

Does anyone know what this is? Under the front passenger seat....