I have an 08 S, and my heater seems to not be working properly, I recently had an oil leak fix at which point it stopped working completely and I took it back to the shop, they said it was due to an air bubble in the coolant hose, heater went back to working as normal but now its back to not working. It takes a very long time for it to spit out any warm air, and when it does it is only when im accelerating. Any thoughts?

 

Recheck, and bleed the coolant system again.
Sounds like more air in the system, or bad acting thermostat.

- Erik

 

Might just be low on coolant.

 

Turns out its leaking coolant, waiting on the part to fix it but in the mean time have to keep an eye on the coolant