Hey guys and girls just thought I would post looking for some advice.  Got a 2010 Astra j Sri with 35k on the. Lock and recently I've been having a service vehicle soon message pop up more frequently. Tried a mate's code reader but I don't believe it was up to much as it didn't find anything. This coincides with sometimes the engine fan is on 100% at hot and cold start.

Has this happened to anyone else? I get a sort of burning smell in the vents at times also.

Not really even sure where