St200 TC and Handbrake light on - Electrical (Mk1/Mk2 Mondeo) -

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St200 TC and Handbrake light on

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#1 Masonbaz


    Just Joined TF!

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  • Vehicle Driven:Mondeo st200
  • Name:Barry
  • Location:Forfar Scotland

Posted 18 February 2018 - 08:08 AM

Hi and welcome . I’m new to the site and I’m hoping someone with knowledge can help me as I’m scratching my head a bit . My st200 has developed quite the party piece . Firstly the TC and handbrake light started to come on for no reason and now it stays on constantly . Then it has started to keep running when I take keys out the ignition . When I take the keys out the ignition turns off as in the radio will go off and the dash etc but the 2 lights as mentioned above stay on and the Car keeps running . Eventually it stops and the 2 lights go off . But in the morning the battery will be dead . I’ve finally seen the reason for the dead battery is the ignition comes on all on its own . The radio will be on the blowers the dash lights etc and the car is locked up . I’m assuming all these are related and I’ve thought maybe a bad earth or faulty relay or alternator but not really looked into it too much yet but MOT time is coming up and I’d like to get this sorted . So any advice would be much appreciated if anyone has experienced this kinda thing before . Apart from this the car drives faultless and I love it . Thanks in advance .
Barry .

#2 frembrit


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  • Vehicle Driven:Mondeo MK4.5
  • Name:Dave
  • Location:Somerset

Posted 18 February 2018 - 12:16 PM

The TC and handbrake light staying on means that there is a fault somewhere so you need to check the ABS sensors and wiring, ABS rings on the CV joints / rear hubs for splits and the ABS/TC pump.


I don't think you can do much with the ABS/TC pump unit though. I had a similar fault on my old ST24 and ended up replacing the pump. It's located under the servo and a bit of a pain to get to, think I had to reach through the near side wheel arch to disconnect the electrical plug which has a diagonally sliding locking mechanism.

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