Question about 2010 Volvo S80

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When i try to start the car the electrical system is cycling and will not start

Radio turns on and off, AC turns on and off there is a relay clicking sound.

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Posted on Jan 02, 2017

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SOURCE: Volvo s60 2004 - electrical system seems to have

you might of had a spick in the system blowing the fuse

Posted on Oct 03, 2009

  • 17129 Answers

SOURCE: Start car everything ok. all

You need to have the entire circuit checked which flows through the mains switch. It seems that upon starting when all circuits are OK, there is a switch/relay/connection failure breaks the circuits described .
Now since the ignition system gets the supply the engine works on.
So trace the INPUT voltage to the mains switch, check the output to the secondary circuits, check them one by one, if they fail to output LOOP A WIRE and if the circuit is established then the mains switch is the suspect.
Also check the sub - relays in the relay box as it can fail after contact, check each output to find the missing voltage. Easy way is to use a test lamp of 12 Volts and trace if usingg a multimter becomes difficult as the visual indication makes if easy to touch and proceed to find the open link or switch.

Posted on Sep 13, 2011

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