Fuse 12 Fail - rear window (but it hasn't)

Datatek said:

Put a meter across the output to the rear screen from the BECM and check the voltage.
a lot of relays of the type in the BECM have removable lids, once open, it's possible to clean and adjust the contact with a bit of care. I'll have a look tomorrow if it will help. The relays are not too difficult to replace but you do need a good fine point soldering iron and a solder sucker. Be very careful of static electricity on your hands when handling the BECM innards.
I didn't know the rear screen was controlled from the BECM, thought it was like the front screen. Another bit of overcomplicated design.

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Datatek said:

Put a meter across the output to the rear screen from the BECM and check the voltage.
a lot of relays of the type in the BECM have removable lids, once open, it's possible to clean and adjust the contact with a bit of care. I'll have a look tomorrow if it will help. The relays are not too difficult to replace but you do need a good fine point soldering iron and a solder sucker. Be very careful of static electricity on your hands when handling the BECM innards.
I didn't know the rear screen was controlled from the BECM, thought it was like the front screen. Another bit of overcomplicated design.

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NikTheGeek said:

I'm confident enough with a soldering iron and anti-static precautions. I have a solder sucker etc. So no worries there. I'm more worried about how I get it out as its under the seat!!! And I assume I'll have to disconnect the battery and then will I have all the BECM/alarm/sync issues to look forward to!

Is there a how to for removing the BECM? Not looked in RAVE yet as that sometimes seems to take a long way around...

tnx all

Nik

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Saint.V8 said:

If you follow the disconnection procedure for the battery, there should be no need to EKA...only maybe sync the keys again...

Usual battery procedure is to loosen the Negative clamp but not disconnect....put key in ignition to position 2 than back to 0 and key out...now disconnect the negative clamp within 17 seconds....

On reconnection, have a door open and the keys in your pocket as they have a tendancy to lock the doors if you have the doors closed...!!!

Easy access to BeCM is to remove the front seat (4 or 6 allen bolts IIRC) motor backwards and undo front 2 bolts, then motor forwards to undo the 2 or 4 at the rear and lift out....then discon the battery and remove the BeCM....

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Datatek said:

Never bothered with that rigmarole when dissing the battery and never had a problem. Depends if you have a BBUS sounder or not.
No motor on my seat LOL
Mine seat is held with TORX socket head bolts

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Saint.V8 said:

Yeah you would have thought that if the front is external relay controlled, the rear would be too...seems odd to me to!

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