Club Touareg Forum banner
1 - 3 of 3 Posts

·
Registered
Joined
·
33 Posts
Discussion Starter · #1 ·
I'm about to buy an '05 V8 with air suspension in immaculate condition from an acquaintance for an attractive price because it needs some attention. It's just turned over 100,000 miles. The water pump and timing belt have been replaced just recently, so that's a positive thing. It needs front brakes immediately - the current owner is experiencing the loud secondary warning. I'm confident that I can fix the brake problem myself. But then there's an electrical/computer issue: The car sat for a few months with a completely dead battery. After replacing the battery, the computer is throwing some codes(I don't know which ones), and the battery loses it's charge quickly for no apparent reason. These issues did not exist before the car sat for a while with a dead battery. It's as though the computer didn't like being completely without power for an extended period. His independent mechanic has told him he believes all will be well if cars computer get re-flashed. My feeling is that it must be something simple. and maybe the computer re-flash is the answer. I searched a few times in the technical forums but I haven't come across anything similar yet. I'm hopeful I'll find the answer eventually. We look forward to travelling in the Touareg and occasionally pulling our 4,000 lb travel trailer.
 

·
Registered
Joined
·
2,065 Posts
A VCDS scan will tell you what all the codes are. An OBD scan will get you close, but you really need VCDS if you're going to try to troubleshoot a Touareg.

If the independent shop doesn't use VCDS (they may know it by VAG-COM, the old name), they are just guessing as to the cause of the problem. Being without power should not require any module to be reprogrammed. When the mechanic refers to the car's computer, WHICH ONE is he or she talking about??? There are tons of modules and controllers in new(er) cars now.

I suspect that something happened to drain the battery and that is why it was left to sit. If you have to have a shop look at it, make sure you're getting the vehicle VERY CHEAPLY. The labor rate for chasing down electrical gremlins can add up quickly.
 

·
Registered
Joined
·
198 Posts
Second on VCDS if you have any Touareg but especially a T1. Best support of any code reader I have ever experienced.
 
  • Like
Reactions: Olblueiiii
1 - 3 of 3 Posts
Top