Does this make sense re: heated door lock: Frosty morning, open door with remote, lean in, start
01-20-2009, 08:47 AM
#1
AudiWorld Super User
Thread Starter
Does this make sense re: heated door lock: Frosty morning, open door with remote, lean in, start
engine, turn on AC to defrost, turn on rear window defrost, start scraping windows (UrS4 is in the garage, this is my 98 C4 A6 Avant).
I start on the driver's door window and work my way around the car. When I return to the driver's door, I notice a melted patch of frost around the key hole (now about 4" in diameter).
Hmmm...okay I have a heated door lock. But why was it activated by the rear window defroster? If I was able to turn on that switch, I was already in the car (either via the key or the remote) and don't really need the heated lock.
Or do I?
BTW, the door mirrors don't seem to be heated. Which makes no sense.
I start on the driver's door window and work my way around the car. When I return to the driver's door, I notice a melted patch of frost around the key hole (now about 4" in diameter).
Hmmm...okay I have a heated door lock. But why was it activated by the rear window defroster? If I was able to turn on that switch, I was already in the car (either via the key or the remote) and don't really need the heated lock.
Or do I?
BTW, the door mirrors don't seem to be heated. Which makes no sense.
01-20-2009, 09:29 AM
#2
AudiWorld Super User
Join Date: Aug 2005
Location: beside the Great Salty Wetspot
Posts: 4,898
Likes: 0
Received 0 Likes
on
0 Posts
1997 & 1998 C4 door locks and mirrors are heated anytime the ignition is on, per the wiring diag
the heating elements in your mirror glass are probably burnt out.
01-20-2009, 09:35 AM
#3
AudiWorld Super User
Join Date: Aug 2005
Location: beside the Great Salty Wetspot
Posts: 4,898
Likes: 0
Received 0 Likes
on
0 Posts
I take some of that back. Lock heater control modules have current all the time
mirrors are supplied through the ignition switch.
<img src="http://i100.photobucket.com/albums/m32/JunkyardCars/misc/1997lockheat.jpg" border="0" alt="Photobucket">
<img src="http://i100.photobucket.com/albums/m32/JunkyardCars/misc/1997mirrors.jpg" border="0" alt="Photobucket">
<img src="http://i100.photobucket.com/albums/m32/JunkyardCars/misc/1997lockheat.jpg" border="0" alt="Photobucket">
<img src="http://i100.photobucket.com/albums/m32/JunkyardCars/misc/1997mirrors.jpg" border="0" alt="Photobucket">
01-20-2009, 10:59 AM
#5
AudiWorld Super User
Join Date: Aug 2005
Location: beside the Great Salty Wetspot
Posts: 4,898
Likes: 0
Received 0 Likes
on
0 Posts
if the fuse checks out you can pull the mirror glass off the housing and check for current at
the connectors.
When pulling the mirror glass, it helps to remove the black trim at the bottom of the mirror housing.
When pulling the mirror glass, it helps to remove the black trim at the bottom of the mirror housing.
Thread
Thread Starter
Forum
Replies
Last Post
azn123
TT (Mk1) Discussion
6
05-25-2006 02:55 PM
SilvrBulleTT
A4 (B6 Platform) Discussion
1
12-15-2002 02:03 AM
BigMouse
Audi 90 / 80 / Coupe quattro / Cabriolet
2
10-09-2002 09:56 PM