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I keep getting a phantom 'Handbrake on' alarm. This generates the red 'Stop' light and the red exclamation mark in a circle alarms as well as the beeper. The handbrake works all OK. and the footbrake is all OK. I have checked the handbrake micro switch and that is also OK. I have disconnected the wiring plug from the micro switch which makes no difference at all. I have tried connecting a short across the disconnected plug and this makes no difference. The written alarm on the centre console and the red alarms on the steering wheel panel only come on when the vehicle is moving forward which I presume means that it is tied in with the ABS system. My thought is that I have an intermittent contact to the brake alarm control unit. Here I have a problem the same as most people who attempt their own repairs. NO manual. Firstly could anyone please tell me where the control unit is mounted and if I'm lucky provide a printout of the connections to the unit. Thanks in anticipation

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Hi

May be a stupid suggestion, but, have you checked the brake fluid level ? If it is slightly down then the sloshing motion could set an alarm off )it certainly does on my C8)

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Thanks Rookie, have checked the brake fluid and topped up. No change. What a palava with the reservoir right under the valance. Got myself a glass turkey

baster and clean new plastic pipe to do the job.

 

Sorry paul h, I must be on the thick side today, didn't understand your instructions at all. Would appreciate if you could explain to this idiot again in words of one syllable. Thanks.

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An example on ebay http://www.ebay.co.uk/itm/Citroen-Service-Box-1-2014-TIS-EPC-WDS-/381321373493

 

These are Citroen's workshop manuals that come on dvds that you load on to your computer. For some reason it is called Citroen Service Box but there are no boxes involved.

 

Possibly there is damage to the switch wiring and it is touching the body work somewhere, if so you may need to follow the wiring from the switch to the fuse box to check it. If there is an electrical connection at the brake fluid reservoir you could disconnect this to see if it is the level switch giving the problem.

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  • 5 months later...

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