New answers tagged bmw
Since your friend added a significant amount of water to the system it has diluted the mixture of coolant to water. Instead of just adding coolant you need to drain the system and replace it with the correct ratio of water/coolant. As Allan hinted at, the only way the coolant would be low to begin with is a leak somewhere. Unless that is what you friend ...
The first thing to do is repair any cooling system leak that you have. (Only on a cold engine). The filler cap is on an expansion tank, which is on the right hand side of the radiator as you look at it from the front of the car. You add a mixture of antifreeze and water, at a 50-50 mix, into the tank until the float in the tank rises to the top. Replace the ...
For the BMW 528i power assisted steering BMW specify Dexron II/CHF 7.1/11S. This particular oil will not deteriorate rubber seals in the system, nor re-act with metals in the system, it's useful life and performance are assured. Once upon a time automatic transmission fluid was just automatic transmission fluid, its not now. Stay safe, use the correct spec, ...
BMW use valve overlap to serve EGR. Search for BMW Vanos for more information.
BMW bulb holders are well known to overheat and deteriorate from the heat. Remove the bulb holders, one at a time and check for discolouration. Replace them if so.
Sounds like a problem with a module. There is a feature in most BMW's that rolls down all the windows when the unlock button is held but if you are sure you didn't do that then it could be a module. (Note: some BMWs relock if no doors are open after a specified time period). Since you also had incorrect rear light warnings at the same time, I would ...
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