Heading over to the mechanics after work tomorrow and will check for all of these things. Thank you very much!

Hi there, My Volvo wont start, all the electronics work when the key is turned to on. Radio works, windows go down, weirdly the power locks don't work. No response from the starter, just a low hum. Battery, Starter, Alternator all fine. Mechanic says it might be something to do with the Anti theft m...

Yes exactly

So it keeps running after being jumped, even when the cables are removed.

Battery Clamps are tight on terminals.

Thank you for your response.

My 2000 V70 has been having a strange issue for the past few weeks. When I turn the key in the ignition, it starts fine and then approximately 2 seconds after starting it dies again. This happens consistently until the battery no longer has enough juice to turn the engine over. If I connect jumper c...