I dont understand the digital heating system in my 318i it seems to take forever to heat up both displays are set to 32 degres the car is new to me and came with no instruction manual its R reg so i think thats 96/7
I have a 1996 4door BMW, that the heat isn't working. we already check the blower and it's not that. We beleive it's the blower ristotor. It's not on the blower as we were told. My question ? is it under the steering wheel our the glovebox.
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have you tried having the fault codes reading section of the book
It is the first line of the trouble shooting
it appears that there is an electronic part break down for over heating
it could be in the ignition control module, ECM, coil/s, immobilizer
try exchanging the ECM with a known good one and fix any faults shown on the code scanner
have a pressure test done on the cooling system to check for leaks. have a flow test done on the radiator to check for blocked cores. Have a compression test done to check for head gasket or cracks. If you have a viscous fan hub on the fan then replace it if the heating is indicated at stop lights and slow traffic. If automatic check that the transmission oil temperature is not overheating and putting that heat into the radiator from the oil cooler in the radiator tank
I assume you mean the radiator fan. This might be indicative of a different problem. The main issue is, does the car overheat? If not, then it's probably a thermostat that's stuck open. A lot of things can fail in the fan system...the fan motor itself, a fuse, a relay, or the temperature sensor that tells the fan to turn on.