BMW 528 - Recent Questions, Troubleshooting & Support

If you've never replaced the timing belt or chain,That would be my first thing I'd check is the Timing belt or chai, just aline the timing marks on crankshaft and then look at the position on the distributor to see if it's pointed in the #1 firing position .

Sounds like a voltage problem. Did you Jump it? You may have fried a diode or two in the circuit. Car computers relies on voltage feedback to check components for correct operation and calibration. If the voltage is thrown off the computer will trip service codes as it thinks there is a problem, like a chain reaction.

The wiper relay is a common cause of this failure. It is not very expensive and easy to replace. Search Google to find a replacement and instructions. Use these terms: e39 wiper relay

I would first check the hood switch. They are plastic and tend to break or come loose. It is located near one of the cabin filter housings, I can not remember which one. It has a small rod that sticks up about 1/2 inch and has a two pin connector. Just disconnect it. Good luck.

test the switch appears to be working doesnt mean its working and or properly aligned

if it over heats in one mile the exhaust is probably plugged up bad converter look under se if it is red when it gets hot dont run will blow head gaskets and poss damage to the motor

it is possible that the rain sensor (if equiped) is the issue. if not equiped, then i would be more apt to replace the relay. it is located under the hood, under the passenger side cabin filter box, beige in color. fairly inexpensive.

the fuses may need changing

One problem can be when changing batteries be careful not to push any buttons, this can cause problems or if the batteries have been dead for a while, looses its "frequency" the alarm in the car is not picking up the transmitter in the key.(key and alarm in car out of sync ) get the keys re-coded. depending on which bmw you have you can DIY ( google re-coding bmw 5.. keys) or go to bmw.

red positive black neg.

Turns out it was the ignition switch (Various lights and radio)and clock spring (air bag light). Both were simple replacements with common hand tools. Simply go to youTube and watch any of the number of videos. Clock spring took me 20 minutes to replace. The ignition switch 45 minutes. Just remember to unhook your battery before you begin.

The best repair manual is from Bentley Publishers. It is expensive but you might be able to find a used copy at eBay or in classified.You should join Bimmerforums.com and Bimmerfest.com to find free help for whatever you need to fix.

an air lock in the system.that is what the bleeders for...

• Replace rear pads and wear sensor.

Hold milage reset til you see test then toggle through it pro forms test and resets. Check YouTube for further info

those rubber mounts on the driveshaft.....replacement them. sometimes called guibo joints.

wheel speed sensor, believe the front right or driver rear, one of those two, they're different, and not interchangeable---the fronts and rears.....both fronts are the same and both rears are the same but the front are not the same as the rears. There is 4 of them btw.

transmission rebuild.

remove dust cap cover to the tensioner pulley. get a 16mm socket, turn it to relieve the tension, and slides off.

that's it...no clue to whether the compressor is kicking in? Nothing? No pressure test on the refrigerant? Well, in that case, you're in luck, open wallet, go to bank, get $3500 loan. It might cover the a/c.