Key will not turn in ignition
Hiya,
This could be any number of problems, but first try twisting the steering wheel in either direction, as most modern vehicles are fitted with steering wheel locks and require you to turn the steering wheel by a set distance, then turning the key in order to release the lock and start the engine.
It could also be a warped, distorted, bent or damaged key. If you can remove the ket intact then I would advise to do so, then to take the key to either an approved locksmith so that you can have the key re-fabricated, or better still to a Volvo approved dealership.
Note: Taking any problem to an approved dealership might incur massive charges, so often going elsewhere is sometimes the best answer, unless of course the issue requires a dealership.
The next problem could be if the locking system is supported electronically. Then I would start to investigate your fusebox and the direct wiring to the ignition and lock system. However, this to me does sound like a mechanical issue, and it is here where I would investigate first.
So turn the steering wheel, or move it slightly with one hand, and the opposite hand shoukld be attempting to turn the ignition key.
N.B.
A broken steering lock can cause this to happen, especially if somebody has tried to steal the vehicle, or too much force has been applied to the lock. Reason.... its exactly what it is meant to do, prevent a vehicle from being moved unlawfully. A collapsable lock is the best way to achieve this especially if the steering lock also locks the ignition barrel. The only way around this would be to remove the entire locking system from the undwerside of the steering wheel.
I hope this is the fixya for you and I look forward to hearing from you soon
Yours sincerely
Oz