HELP PLEASE !!!! S40 not turning over

The tow will not have caused this. Also, if a garage had jumped my car using 24 volts I would be raging, it is only a 12 Volt battery for a reason. I'd be checking the wiring, especially the earths around the engine and battery. Another popular fault is the cabling below the radiator which corrodes and causes problems. Could there have been an interior light left on when the car was dropped off or ignition on and HRW or the like left on during the recovery?

I went to the garage earlier on thinking they were doing something obviously wrong. The battery was on charge when I arrived and the heater blower, radio etc all work so its definately got power. Ive had a dead battery before and know how it behaves but this just seems as though the starter motor isnt connected when you turn the key,

Check the battery to earth cable - it can rust at the chassis end with only a couple of strands trying to pass the current. This has the symptoms of a knackered starter motor and because it's not easily visible people end up with a new starter motor only to find it's made no difference (thanks Mr AA man). Make sure battery is fully charged as Volvos ask a lot from them.

check the wires to the starter from the battery and as said above the earth. sounds like something simple, youd want to smack those mechanics 24vs impatient numpties thats one way to fry an ecu for sure.

well i managed to find the problem with no help from those monkeys at the garage. I managed to get the AA to tow the car back home from the garage and took advice from another thread off here and bought a new battery this afternoon. Connected it up and with one turn of the key it sprung into life. Now back to the original problem of changing the water pump. Luckily I bought a second car lst week as I thought my S40 was dead so I can take my time and replace the pump myself...More researching here for that task I think..

Boifuel 

Howdy lads, i could not seem to be able to start a new topic! so i was wondering if my 1999 S40 1800cc petrol will run on boifuel?