What are 2 wires under back seat
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Newbie
Joined: Mar 2016
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Clk 320
What are 2 wires under back seat
Just bought my clk and Was tightening my handbrake and seen that there is 2 wires leading from the front and have been cut and tied up. What are they??
Noticed My seat bolsters won't work but I'm sure they were working when I picked it up, also my parking sensors don't work
Dunno if these are related
Noticed My seat bolsters won't work but I'm sure they were working when I picked it up, also my parking sensors don't work
Dunno if these are related
Last edited by Dbora94; Mar 23, 2016 at 04:13 PM.
Super Member
Joined: Mar 2010
Posts: 684
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From: Lebanon
2007 BMW 550i
those 2 wires are for the seat belt tensioner , theres probably a capacitor in there to fool the SRS system that the tensioner haven't been fired. it seems your car has been in an accident, and for cost cutting they just installed capacitors on the belt tensioner instead of replacing them. probably the same story with the front seats. any airbag errors?
Super Member
Joined: Mar 2010
Posts: 684
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From: Lebanon
2007 BMW 550i
basically these tell the tensioners to pull the seat-belt anchors down in case of an accident for better safety. Them being disconnected wont mean anything, it is theoretically "less safe", I wouldn't be worried about that. I would be worried about looking around the car for damage that has been repaired in the same "cheap way".
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Seat belt pre-tensioners don't always have to be replaced. It depends on which system is used. The older systems used a gas-charged cartridge that was a one-time user. Newer systems use an electronic servo that is reusable (self-resetting). I can't remember which system the CLK uses. I seem to recall seeing gas cartridges in mine. But if it fires, it will trigger an SRS Fault.
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Thread Starter
Newbie
Joined: Mar 2016
Posts: 13
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Clk 320
thanks guys! also i want to replace my flat badge with a bonnet star, is that possible? trying to find a kit on ebay as i know there is no hole in my bonnet so was wondering if they made a star emblem with a flat bottom that you could glue on
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