No significant moisture under the car after being parked overnight. When I start the car, the light is off, but after driving it starts going on and off again. When I spoke to the dealer prior to topping off coolant, he said that with the two repairs, there may be air bubbles confusing the sensors. On the 10 mile commute to work this morning (mostly highway), the light lit up then went off 3 or 4 times, on for 30 sec to a few minutes at a time.Įngine temp is normal. Now, the coolant light is being very sporadic. Expansion tank was replaced, drove it home.Ĭoolant light came on again, I topped off the coolant with 50/50 OEM/water (on 6/21). ![]() Drove it off the lot, and started loosing coolant, took it back and what a surprise, the expansion tank had to be replaced. Went to the dealer (on 6/19) and they replaced the thermostat. A week ago the "Service Engine Soon" light lit up. The light will come on while driving, then go off. When starting, it comes on then goes off after several minutes of driving. SIGPIC /SIGPIC 1995 350 'Tool Box Injection'. A multi-meter can tell you if a wire is open. If not then you could possibly have an open wire and the pcm isnt seeing that the switch is closed thus keeping the light on. There IS such a code for Low Oil Level > 1 Liter. ![]() AFAIK, there is NO DTC or Fault Code related to Low Coolant. Our 2000 Diplomat with ISC engine has an issue with the low coolant light. If the light goes out then the switch is bad. 1) in the X112 Connector at the Switch, or the Brown/White wire between X112/2 and X14271/54 2) a faulty chassis ground (Brown/Black wire) or. Here's the situation, I drive a 2002 330Ci, 135k miles. Engine, Transmission, Engine Cooling, & Hydraulics.
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