AzNMpower32. 14264 posts · Joined 2005. #2 · Sep 15, 2011. There is no engine block heater. However, the coolant/water pump is electric (as opposed to traditional mechanical) so yes, the engine warms up to operating temperatures very quickly. It also reduces fuel consumption. 1. Not Enough Coolant Your BMW uses coolant to keep your engine at its ideal operating temperature (especially during the hot months). During the winter when you have your heater turned on the coolant from the engine is used in the heater core. The heater core is what blows warm air through your vents. NOTE 2: On Windows & Linux, the "F3" hotkey will jump to the next find; "shift F3" will reverse the find; "enter" will open the current link. Searching for "heater core" came up red; but searching for "heater": - Heater Valve replace (Hot air only) DIY. - Heater control valve replacement. - Heater hot water valve repair. The $2.1k estimate was for $450 per sensor and 5 hours of labor @ $220 per hour. Pretty insane considering I could buy the tools and parts for $350 and do this all on a Sunday. I did previously check the voltage and the fuses and there were no issues. The oxygen sensor heater was setting as part of the OBD2 cycle. My 07 328xi is having some issues. My engine is overheating and I have no heat inside the car. I***8217;d let the car run for 10 minutes and no heat inside. However if I drive for 30 seconds my engine will overheat and I***8217;ll get a light on my dash. I can probably make it 100 feet before it happens again. 2007 e92 328i [0.00] Yes I have restarted the car many times now. I can shift up or down M1-M2-M3-M2 etc. although it never seems to engage Sport/mode (no change in revs or shift points) and if I hold the gear for more than 15 seconds it reverts back to the"D" setting. 1588 posts · Joined 2008. #6 · Jan 13, 2011. If you haven't replaced the thermostat, w-pump and exp tank, now would be a good time to do that as well. It just might end up solving your problem. 08' E90 335i, Sport, Premium, Logic 7, 6-spd. 01' 330i TiAG, ZSP, ZPP, ZCW, 5spd - R.I.P 04/12- gone but not forgotten. 126 posts · Joined 2016. #3 · Mar 27, 2018. First verify if the car ever had comfort access in the first place. If so, failures are usually caused by water getting into the driver side door handle and frying the module. Usually you'd have to replace the door handle and the Passive Go module. Search for "passive go comfort access" and you'll This is a long time problem with BMW Radio's This is a long time problem with BMW Radio's A dealer will only replace the whole unit I am pretty sure. They have been using this same display type since before the turn of the century. So if you get another BMW Radio it probably will happen again especially if you live in an extreme temperature Im not talking about electriacl heated windscreens (with little wires inside the glass) as used in the Ford group but about the heating of the air used for demisting. Some cars have a electrical heater to warm the air immediately whilst the engine is heating up. Wife's Freelander doesnt have a heated windscreen but has a electrical booster wmb3.