Sumer65

i have read in few places that there are new sensors introduced at BMW that will go off if car is going to get into trouble like if the car is too near the other car of if its going to meet a collision it will switch off immediately. hoping that this will reduce the number of accidents.

Changing whole is the only option, sorry mate.

If PSF is full, then next to doubt is pulley and tensioners on which belts is rotating. Check them for minutest play and you will find the fault by finding loose pulley or tensioner.

Door handle has small latch lever on side of door that might be worn out and free now. You can source that from scrap or get new and get to any denter shop and he can replace it.

You need to calibrate the timing belt as to its exact position unless you have this excessive black smoke means unburnt fuel.

See some good professional garage and they can help you.

Check all the fuses, some fuse is blown due to which this issue is failing three different things.

If car is not due for service and it could be tires. Inflate tire to optimum pressure, if same its not tires. Check the hand brake is not over tight.

Make sure all the spark plug is in good condition and in correct firing order.

Its a head gasket leak if you also experiencing a power loss and white smoke from exhaust. Its a big fix, get ready for big dent in pocket.

thnx benson. You were damn right. Drum need polishing. Cheers.

(Apologize for for delayed thank you message)

Open the hood and locate the black plastic cover on the backside of the headlight housing assembly. The low beams on your BMW will be covered by this black plastic cover. Unplug the electrical connector from the back of the headlight. Rotate the black plastic cover counter-clockwise with your fingers and pull it off of the back of the housing. Rotate the square headlight collar counter-clockwise and pull the headlight out of the back of the headlight. Insert a new headlight and rotate it clockwise to lock it into the housing. Replace the black plastic cover and plug the electrical connector back in.

auto door lock in every door is dead. highly unlikely but that's the fact as central locking device is fine as it locks the driver door, so next in line to doubt is auto locks on every door.

In such situation first doubt goes for changing the crank position sensor. 90% it shud solve it.

Recently bought Z4 2008 model and when i brake sometime i hear squeaking noise, though not always. Brake pads and brake oil is fine, no brake indicator is on in the dash.