brake light issues, jeep compass.

[ian.settle1]

i didn't mention southerners for fear of reprisals from the ku klux klan.

Would you like a visit? It can be arranged

 

[amarok88]

luckily I am none of the above, and I am also not a southerner .

I should be safe....for now

 

[MDJ]

I'm a southerner :59:

 

[markc123]

I'm a southerner :59:

Haha!

Im really sorry to hear this buddy.

Hope you can find the sufficient support you need

 

[telectrix]

nah, gloster. that's Almost a midlander.

 

[MDJ]

well west country, but some say were southerners hehe

 

[telectrix]

Would you like a visit? It can be arranged

don't say that electric fence across the wirral has broken down again.:boxing_smiley:

 

[ian.settle1]

don't say that electric fence across the wirral has broken down again.:boxing_smiley:

Now that was what that fuse was for which no-one knew what it supplied?

 

[UNG]

This forum may be more likely place for an answer to your problem

 

[amarok88]

Hi guys,

just to finish the thread as you never know, another person may come looking



the 3rd brake light was working and the other 2 were not. all 3 run off of the switch so since the 3rd was working this shows the switch was fine.
they all also run off of the same fuse, so again this was fine.
multimeter shows 12v going to fuse but no power at all going to rear sockets.

spoke to auto electrician who states he has asked around friends and jeep use a TIPM (some sort of turning signal unit) and that he cant fix this as its a specialist jeep item.

towbar was not working for brake lights only as it was wired into tail brake lights. all other parts of towbar work as do all other lights.

Jeep confirm it is likely to be the TIPM but they would have to diagnose first (£136). if it is TIPM they cannot repair / reset it and would have to order one from America which takes a week and then fit it.

I looked on the net and someone had this done in America with diagnostic, part and fitment and it cost 1200 dollars!!!

this TIPM controls various aspects of lights, not fully sure what but it controls things individually therefore is working for everything except brake lights.
this is apparently because it doesnt like towbars being fitted unless they have a Mopar relay. and it HAS TO BE MOPAR. I was not aware of this as the Jeep does not have any on-board system telling you lights are out etc or any other sensors so I just wired towbar straight in without relays.
It is only the brake lights in the towbar it doesnt like, something to do with the on.off power source makes it trip itself out (yet it is not concerned about indicators).

The 3rd brake light for some reason completely bypasses the TIPM and goes power>fuse>switch>light.

based on this I have just wired the 2 rear lights into the 3rd light.
Hey presto they all work completely fine now, as does the towbar.
spoke to my uncle who had a Jeep Grand Cherokee and this happened to him, he did the same and had no further issues for 4 years and then sold the car.

so all sorted now but just wanted to finish the thread for onlookers incase anyone else is crazy enough to ever buy a Jeep as they all apparently have this TIPM crap.

hope this makes sense, and thanks for the advice

 

[telectrix]

it's a problem with a lot of cars nowadays. bloody stupid non-essential electronics. the only form of engine management should be your right foot. it's all a con to make us use main agents for repairs.

 

[PEG]

Bloody Canbus and nodes,a lot of plant uses these control systems and we have swopped a good old fashioned DC feed for a weedy signal.Happy Christmas all...