BMW Repair Questions? Ask a Mechanic for Answers ASAP
what do you mean by " engine oil temp gauge won't shift"
where is it that you are reading the oil temperature from?
you mean the outside temperature display?
so the engine temp guage does not get warm, and then you don't have any heat in the car?
Please let me know if you have further questions. Please do not forget to click a positive rating as this is the only way I receive credit for my answer, thank you. Best wishes with your vehicle.
this can be caused by a failed temperature sensor (or problem with its connection/wiring) or by an actual cooling system problem that is preventing the engine from actually getting warm, which would most commonly be a thermostat that is stuck open.