Rear window heater, lights and central lock problem at same time
Thread Starter
Audiworld Junior Member
Joined: Feb 2017
Posts: 27
Likes: 0
Rear window heater, lights and central lock problem at same time
So it is bear winter here in Norway now and it has been cold and warm every other day the last few weeks. My doors freeze, my locks freeze and just about everything else too.. But it always starts and run fine.. First i noticed my heater in rear window sometimes don't work.. Then when i try using my blinkers they go at lightning speed sometimes just as they do when a bulb is broke, and other times they work normal.
And my central lock has sometimes been slow (need to bang on the defa remote for it to work). And last time i locked my car the defa remote would not work.. Have no idea if it is the remote or the car. So now my car is in alarm mode and can't turn it off.. Had to cut the wire to the horn to not scare the neighbours every time i use the car.. So i can use the car but the lights blink for 2-3 minues before it stops. Tried taking fuse 6 and 38 out to disable it.. Don't do nothing.. But i would like to fix the problem also.
Anybody got any ideas for the short and longtern fix?
My car is a 1999mod 1.9tdi
And my central lock has sometimes been slow (need to bang on the defa remote for it to work). And last time i locked my car the defa remote would not work.. Have no idea if it is the remote or the car. So now my car is in alarm mode and can't turn it off.. Had to cut the wire to the horn to not scare the neighbours every time i use the car.. So i can use the car but the lights blink for 2-3 minues before it stops. Tried taking fuse 6 and 38 out to disable it.. Don't do nothing.. But i would like to fix the problem also.
Anybody got any ideas for the short and longtern fix?
My car is a 1999mod 1.9tdi
AudiWorld Super User
Joined: Feb 2002
Posts: 2,257
Likes: 5
Dam, electrical gremlins are plaguing me too. The bentley schematics are inadequate for my taste.....I have to begin taking the dash apart to look for my problem.
Old wires, shorts, ground issues......
Mike
Old wires, shorts, ground issues......
Mike
AudiWorld Senior Member
Joined: Jan 2015
Posts: 1,186
Likes: 43
From: Sierra Vista, AZ
Start by checking inside the rubber sleeve where the wiring comes out of the body of the car and enters the driver's door. This is a notorious location of problems for your described symptoms. The insulation becomes brittle over time and breaks or flakes off causing short circuits, cross connections and broken wires. The central control point is in the driver's door lock module, which could also be causing a problem. Start by changing the fob batteries then check the wires as described.
Thread Starter
Audiworld Junior Member
Joined: Feb 2017
Posts: 27
Likes: 0
The weird thing is that the central lock still works.. I just cant turn off the alarm. But i cant figure out if it is no signal leaving the defa fob or if the box in the car dont recive the signals from the fob.
And is the reciver box located under the steeringwheel where all the relays is?
And is the reciver box located under the steeringwheel where all the relays is?
Thread Starter
Audiworld Junior Member
Joined: Feb 2017
Posts: 27
Likes: 0
The antenna for the central locking/alarm system is in the rear window. It is integrated into the rear window defroster.
The control unit for central locking/alarm is in the footwell below the carpet in front of the left side front seat (driver seat on LHD cars.)
Since you mentioned in your first post that the rear defrost was occasionally not working, that may be related. Check your wiring.
The control unit for central locking/alarm is in the footwell below the carpet in front of the left side front seat (driver seat on LHD cars.)
Since you mentioned in your first post that the rear defrost was occasionally not working, that may be related. Check your wiring.
Thread Starter
Audiworld Junior Member
Joined: Feb 2017
Posts: 27
Likes: 0
Battery did not work. Checked the antenna too.. But couldn't find any issue there.. You know what wires go where?
I got a feeling too that it can be the keyfob that is the problem.. Can i just get a new non original for to work on it?
I got a feeling too that it can be the keyfob that is the problem.. Can i just get a new non original for to work on it?
Thread Starter
Audiworld Junior Member
Joined: Feb 2017
Posts: 27
Likes: 0
Good idea too, but i still have problems with the rear window heater so still an Audi issue.. Any ideas there? I get moisture all the time gettin on my windows inside the car so i would guess there i an electrical issue there. Any known problems with selant so moisture can get into the car?
Trending Topics
AudiWorld Senior Member
Joined: Mar 2004
Posts: 911
Likes: 17
Could also be rear sunroof drains. Any water stains on pillar trim or headliner? I would not rule out aftermarket alarm and would disconnect it to further diagnose. The fact that you giving it a whack is a clue.
AudiWorld Stories
Bringing Audi to Life for Audi Fans
10 Strangest Audi Designs That Actually Made Production
Joe Kucinski
2027 Audi Q7 and SQ7: Audi Upgraded EVERYTHING!
Michael S. Palmer
Audi Unveils Absurdly Cool New Supercar: 10 Things You Need to Know!
Verdad Gallardo
The Highs & Lows of Every Audi C-Class Generation
Joe Kucinski
Top 10 Most Expensive Audis Ever Sold on Bring-A-Trailer
Brett Foote
10 Audi Features & Options We Miss the Most!
Joe Kucinski
Audi Recreates Crazy-Looking Speed Record Breaker From 1935
Verdad Gallardo
Coachbuilder Recreates the 1995 Audi TTS Concept
Verdad Gallardo
Every Audi V10 Car Ranked!
Joe Kucinski
Thread Starter
Audiworld Junior Member
Joined: Feb 2017
Posts: 27
Likes: 0
There are several places for water ingress. I have experienced water entering at the base of the windshield where the cowl cover is not sealed properly. Also, if the cowl drain plugs (one is underneath the battery box) are clogged with leaves and debris, the water can rise until it enters the cabin by way of the interior air intake.
But still wonder why my rear window always freeze up inside. Is there some moisture leaks that are known from that area?
Thread Starter
Audiworld Junior Member
Joined: Feb 2017
Posts: 27
Likes: 0
Yeah i'm thinking the fob is bad.