DASHBOARD RADIATOR INDICATOR LIGHT COMES ON WHEN ENGINE IS COLD
MY 1999 BMW 318i RADIATOR DASH BOARD INDICATOR LIGHT COMES ON WHEN THE CAR IS STARTED FIRST ON A COLD MORNING AND GOES OFF WHEN THE ENGINE WARMS UP.THE RADIATOR WATER LEVEL IS ALWAYS OK WHEN THIS HAPPENS AND NO OVER HEATING IS EXPERIENCED AND THERE IS NO RADIATOR WATER LEAKAGE.PLEASE HELP WITH A SOLUTION. I RECENTLY REPLACED THE RADIATOR WATER RESERVOIR WHICH WAS LEAKING,
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look for the a/c relay located (likely) in the fuse panel in the engine compartment near the battery. if it's not there let me know and i'll find out which relay it is. incidentally there may be fuses blown as well and replacing them may bring back your dash computer as well... i believe there are also fuses/relays located in the trunk as well on BMW's.
The below is taken from another site written a year ago:
What you are looking at is the Service Indicator. The green, yellow and red lights let you know when service needs to be performed. The green lights mean everything is still good. The yellow lights mean "anytime you're ready." The red lights mean do the service ASAP. There are also two other lighted areas. One says "inspection," the other says "oil change" (or oil service.) An oil change is an oil change. However, there are two inspections: Inspection 1 is normally at every other 15,000 miles; Inspections 2 is at every 30,000 miles. Your local BMW dealer should have a pamphlet listing all duties performed for each of the services. Inspection 2 can run you around $400-$800 depending on the service station/dealership's labor rates. Inspections 1 should be around 1/2 of that. You should have your oil changed about every 5000 miles. Dealership oil changes can range from $35-$65. A BMW that is well taken care of will last a long time.
FYI, don't be surprised if the SI (service indicator) board decides to **** out one day. I'm surprised to see yours is still working (they usually die within 10 years unless someone went thru the expense to have it replaced.) If/when it does go, just gauge your services by the mileage intervals I've listed above. I'd also recommend when you stop into (or just call) the dealership, go to the parts department and order an owner's manual for your BMW. Should be less than $20 and get to you in about a week unless they have one in stock. When the service tech has performed the necessary service(s), he will reset your SI board so that only green lights are showing.