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C4 - DS4 Owners :: Forums :: C4 Picasso and Grand Picasso - PRE 2013 only :: C4 Picasso Problems and issues
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2007 C4 Picasso VTR+ not starting.
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Author Post
kronosone   
Fri Nov 15 2024, 11:41am
Member No: #60139
Joined: Sep 30 2022
Location: Cardiff
 Please bear with me, bit of an opus this one. Started as a random stalling issue, when the car was restarted everything was fine. Then a load of errors came up on the dash saying Engine Management fault, handbrake fault, ABS fault etc etc. Restarted and they all went away, but the service light stayed on. Drove home and when it was started again the service light went out and all seemed well. Got my mechanic to come and read the faults anyway, but when I started it to move it off the drive to give him better access, the car stalled and then wouldn't restart, it cranks and cranks, but doesn't fire. He tried the check the codes, but the OBD port didn't have power, so replaced the OBD fuse and then he could read them, but the only code that was showing was that the engine ECU could not be read due to error on the CAN ? So he suggested another BSI, got a BSI , fitted it and still exactly the same... Where do I go from here?

Hopefully one of you will know.

Cheers for listening
Ap0qalypto   
Fri Nov 15 2024, 01:52pm
Member No: #52161
Joined: Sep 21 2018
Location: Republic of Serbia
 It seems to me that BSM is the issue. Fuse box in the engine area, not the one in the cabin. I had the same errors when my BSM got water
kronosone   
Mon Nov 18 2024, 07:17am
Member No: #60139
Joined: Sep 30 2022
Location: Cardiff
 Sorry I should have been clearer. I have already replaced the BSM under bonnet unit, and I'm getting the same result.
Ap0qalypto   
Mon Nov 18 2024, 12:47pm
Member No: #52161
Joined: Sep 21 2018
Location: Republic of Serbia
 I would check then fuses on the top of the battery. Water is usually ti blame in cases of BSM failure or fuses on the battery. In my case the carpet about engine was soaked in water. Due its weight fell on the fuses which are on the top of the battery
 

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