Two years ago I bought a 2011 Volvo C70. Since then, it has had a number of electronic problems. The most recent one is with the air con, with heat circulating on the driver's side and cool air on the passenger's side, regardless of whether the heat of a/c is on.

I have been quoted £984 for labour alone to remedy this. Is there anyone out there who can fix it without this exorbitant cost, or have I been sold a lemon?