Audi A8 This full sized Audi A8 sedan offers interior luxury and spaciousness comparable to any car in the full sized luxury sedan class

Heater issues

Old 02-04-2019, 11:42 AM
1st Gear
Thread Starter
Join Date: Feb 2019
Posts: 1
Default Heater issues

Just bought a 2004 A8L with 180k miles got it for 1750. Think I did pretty good. Has its issues of course.

Something i want to get fixed quickly is the heater. Car heats up perfectly, only the driver vent comes out hot. The rest are ice cold. Sometimes the driver goes cold as well. What's going on here?

Also first day I had it the mmi worked great. Next day it pulls up to the start screen and shuts off. Won't go past it.
Old 02-06-2019, 06:11 PM
1st Gear
Join Date: Feb 2019
Posts: 3


My names tanner! I help manage 9th Street Auto out of Arkansas and we ship parts all over the country. We currently have two 2004 Audi A8's that have been completely tore down and are ready to part out. If you need any specific parts don't hesitate to contact me. [email protected].

Thank You
Old 02-10-2019, 04:49 AM
1st Gear
Join Date: Sep 2012
Posts: 80

Hello, it could be the heater valve block assembly under the windscreen wiper area. Looks like an octopus of pipes around a metal part that is valves and pumps.
The best thing for both of your issues is a VCDS (vagcom) scan, save and clear the fault codes and see which ones come back and post them here (full scan)
The MMI shuts down like that for a myriad of problems such as stuck button, drink ingress, fuse blown or MOST bus fibre break due to fault on any of several interconnected things such as Navigation or BT phone, CD player etc..
Related Topics
Thread Starter
Last Post
B6 Models
12-27-2011 12:59 PM
B5 Models
12-09-2009 04:00 PM
Audi A6
01-20-2009 12:33 PM
B5 Models
11-12-2008 09:05 PM
Audi A4
12-19-2006 04:59 PM

Thread Tools
Search this Thread
Quick Reply: Heater issues

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.