05 A6 4.2 with high current draw - Diagnosis?
03-23-2010, 01:59 AM
#1
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Join Date: Mar 2010
Location: Calgary, AB Canada
Posts: 2
05 A6 4.2 with high current draw - Diagnosis?
My car has a high current draw which dealers in Calgary and myself are having a hard time finding the cause. Royal Oak is recommending replacing the steering column and the Start/Access control module to fix the problem, and this is based on codes. I have tested and removed all fuses and checked replays, and found nothing wrong. No accessories turned on. No chargers plugged in. With this fault, the car always needs a jump. Anyone seen something like this before? The current draw is approx 1 amp, which is high. All features seem to work and there is no sound/smell that I am aware of. The draw even interfers with the start cycle.
This has been to Reigel Tuning and Royal Oak with about 10 hrs of testing/diagnostic.
This has been to Reigel Tuning and Royal Oak with about 10 hrs of testing/diagnostic.
03-23-2010, 12:53 PM
#2
Audi Forum - Posts like an A4
Join Date: Dec 2007
Posts: 126
Re: 05 A6 4.2 with high current draw - Diagnosis?
There has to be way to figure out what circuit the draw is with!
I'd focus on relays, as a stuck closed contacts would be a current draw bridge, but the actual culprit must be something fried.
10 hrs of testing for no avail?
"Anyone seen something like this before?" - the history of notorious and deadly AUDI electrical problems is longggg. Hope it's something simple in your case.
Do you have the shop manual (if there is some)?
Do not miss any circuit.
I'd focus on relays, as a stuck closed contacts would be a current draw bridge, but the actual culprit must be something fried.
10 hrs of testing for no avail?
"Anyone seen something like this before?" - the history of notorious and deadly AUDI electrical problems is longggg. Hope it's something simple in your case.
Do you have the shop manual (if there is some)?
Do not miss any circuit.
04-10-2010, 07:54 PM
#3
Audi Forum - Posts like an A1
Thread Starter
Join Date: Mar 2010
Location: Calgary, AB Canada
Posts: 2
Re: 05 A6 4.2 with high current draw - Diagnosis?
This cars love affair with the jump pack continues.
I brought it to Royal Oak Audi in Calgary. They have diagnosed a faulty steering column with the start access control unit as the source. They charged $400 for the diagnosis with $5000 as the parts and labour charge to fix. When I disconnect the start access control module, the current draw is still there, so I am doubtful.
Brought it to Glenmore Audi in Calgary, and they diagnosed a new battery.
After that visit, the car is now reporting an ESP fault and a failure in the electric brake. I noticed also that there is no battery level indicator in the MMI as per the manual
Anyone can help here, or is this just a parts car?
Software versions are:
SU C6-hu.33.6.0.0632
hw C6-hu.6303d2.0
fc sw 03501afc6ab-320870
fc ps 0870 fchw h07
I brought it to Royal Oak Audi in Calgary. They have diagnosed a faulty steering column with the start access control unit as the source. They charged $400 for the diagnosis with $5000 as the parts and labour charge to fix. When I disconnect the start access control module, the current draw is still there, so I am doubtful.
Brought it to Glenmore Audi in Calgary, and they diagnosed a new battery.
After that visit, the car is now reporting an ESP fault and a failure in the electric brake. I noticed also that there is no battery level indicator in the MMI as per the manual
Anyone can help here, or is this just a parts car?
Software versions are:
SU C6-hu.33.6.0.0632
hw C6-hu.6303d2.0
fc sw 03501afc6ab-320870
fc ps 0870 fchw h07
Last edited by Ronan; 04-10-2010 at 08:01 PM. Reason: Missing detail and spelling
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