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997 4s side mirror heating

dennisvdw
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dennisvdw Member

dennisvdw

Posted
Posted

Hi everybody,

My 2007 997 4s has a little problem.... The side mirror heating does not work at all both left and right.... Adjustment works fine. Rear window heat works ok *** well.....

Does anyone know which fuse to check? Or other solutions?

Thx in advance !

Dennis

  • Admin
Loren Member

Loren

Posted
  • Admin
Posted

Mirror controls and heater go through the door control module. So if it were a fuse then you would likely have window and door lock problems too.

You may need to get the door control module re-programmed using a PIWIS tool.

dennisvdw Member

dennisvdw

Posted
  • Author
Posted

Ahhh, i swapped battery's a few weeks ago.... That might have caused it then?

Ill be going to the dealer with it..... Keep you posted! Thx!

  • 2 weeks later...
dennisvdw Member

dennisvdw

Posted
  • Author
Posted

Hmmm the piwis says fault code 8016 mirror heating, both in the left and right door.... Fault doesnt clear....

Any idea? I cant find the meaning of this fault code....

jl-c Member

jl-c

Posted
Posted

Mirror heating is B7 +ve and B12 -ve from the door module, no fuse between unit and mirror itself. A12 +ve and A15 -ve on mirror itself. If of any help?

  • Admin
Loren Member

Loren

Posted
  • Admin
Posted
8016 External BOSE amplifier -- Malfunction in right door speaker



- Wiring harness/loudspeaker for right door speaker faulty

- External BOSE amplifier output stage faulty

dennisvdw Member

dennisvdw

Posted
  • Author
Posted

Huh? I don't have the bose amplifier, and the right doorspeaker works fine.....

This is a picture from the piwis.....

Seems to be a specific mirror heating issue....

I think?

post-80012-0-95999500-1383064455_thumb.j

Mijostyn Member

Mijostyn

Posted
Posted

Hi Dennis,

The PiWIS is telling you that the resistance in the mirror heating circuit is off, either to high as in open circuit or to low as with a short. If you pop the triangular cover off inside of the door where the mirror mounts you will find the mirror's power connector. I do not have a wiring diagram but there will be wires for motion control and the mirror heater. You can ID them with a meter, flipping switches seeing which wire gets power. Once you have IDed the wires compare the resistance of the mirror heaters from each side. If one is much higher than the other then it is bad (open, the usual failure mode) If the Mirrors are ok go too the car side of the connector and check that the mirror wires get power when switched on, If not than you have bad wiring, a blown fuse or a bad switch.

  • Admin
Loren Member

Loren

Posted
  • Admin
Posted

8016 is a re-used code depending on the sub-system.

Still... it has the same meaning - that there is no communication/feedback with the device.

Have you tried removing the mirror and measuring the resistance across the heating element - it may likely be open (infinite resistance).

Or it could be as simple as a bad or broken connection.

dennisvdw Member

dennisvdw

Posted
  • Author
Posted

nope, didn't try that yet, i was guessing that it was a fuse, since both mirror heaters are u/s....

Tomorrow, i will unscrew the mirror and have a further look into it....

  • 1 year later...
simoncpw Member

simoncpw

Posted
Posted

Hi guys

Sorry to dig out this old thread. I removed the door mirror to do some work but forgot to take down how the wires should be connected. Can someone advice how the 2 wires (red and green?) should be connected?

Thx

Simon

  • Admin
Loren Member

Loren

Posted
  • Admin
Posted

Hi guys

Sorry to dig out this old thread. I removed the door mirror to do some work but forgot to take down how the wires should be connected. Can someone advice how the 2 wires (red and green?) should be connected?

Thx

Simon

 

Exact model and year of your car please?

  • Admin
Loren Member

Loren

Posted
  • Admin
Posted

Oops...sorry. It's a 2006 997 C2S. Thx

 

Sorry this diagram is not too clear - but you can rad the color codes for the wires and where they go.

 

(click to enlarge)

post-1-0-32311000-1421167825_thumb.png

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