Audi S6 5.2 parking brake error plus esp malfunction

I had some strange error codes such as the parking brake etc…maybe check the resistance readings on the throttle bodies Cables?

Hmmmm…maybe?

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Thanx, I’ll try anything at this point.

Well I think I found the problem, abs module was shorting out against the pump. My scanner pointed me to the brake control module (no communication), so I went to check on the connection and as soon as I moved it the wire loom started smoking. Im charging the battery up to give it a try tomorrow. But I’m assuming the brake control module might be fried. Thanks to all of you guys for the help.

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Just for information, the brake control module wire loom is routed under the driver’s side air filter box. When i changed the air filter I must of put pressure on the loom and caused it to rub against the pump. Uff what a relief. :cold_sweat:

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Great find on that. Seems the wires are prone to crack. The same thing happens on the B6 S4. A little electrical tape and you’re off to the races. Thanks for the update this will be helpful for others.

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That seems to be the root of the problem but from what I’ve read bad abs control module wouldn’t cause a no start problem. Can anyone correct me on that? Taped up the wires and reconnected the abs module and I still have a crank no start. HELP

Well Justin I decided to check the misery box under the 2 ecus, lo and behold totally rusted out relay and 40 or 50 amp fuse. The big red fuse had one side totally rusted off. Any idea of the function of the relay and the fuse? Haven’t repaired the fuse and relay yet to give it a try but curious to know if it’s the problem. HELP!

Well, problem solved. Apparently that relay powers the ecu. Replaced the big fuseand discarded the old fuse holder. Cleaned the relay holder and replaced the relay. Started right up. I still have to replace the brake control module, the short apparently fried it. Does anyone know if I replace it does have to be coded?

Definitely was a relay, not in plain sight and no info on line about its location. But I found it. Thanks for your help.

Your welcome! Ah relay hell took me months to realize that. I’m glad you figured it out. Sorry I didn’t give more infos on the relays but yeah they power the ecu. That’s why my car would start sometimes or stall back then randomly.

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I think it’ll have to be recoded if you replace it

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Thank you, can it be done with vag or do I have to take it to the dealer?

Probably going to have to take it to a dealer or if you can find someone that can program it for you

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I had my car programmed by a guy he did my ecu and all the stupid modules that went into component protection for the interior of the car and my transmission when I changed it

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So yeah you can take it to someone else if you can find someone by wherever you are or just take it to the dealer

Also even independent shops if they have the software to do it

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Wow that looks terrible GREAT find. it looks like this was water damage?

Just so I understand you didn’t bypass the relay you just changed out the fuse holder with something you made that is in better condition than what you found?

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They looked like my relays from the water damage I had when I got the car from auction

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Yeah, looked like they got wet at some point

No doubt got wet at some point, yeah totally changed out fuse and holder and made one up. As for the relay cleaned up the holder and replaced the fuse. I never knew about that fuse and relay location, found it by chance. No information on line at all.

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