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You must remove the fuel tank to replace the fuel pump. This is no fun without a car lift and much heavy equipment is needed and a good amount of car repair knowledge and a full set of hand tools. If you have none or very little of the listed things then leave it to and expert.. DONOT USE ANY TOOLS THAT CAN SPARK.
Yes. The light is activated by a sensor within the pad to tell if failure is in range. Depending on your driving habits you may have a few hundred miles of pad left, if you do not change them soon other damage can occur to rotors or calipers.
for the fronts all you need is a set of metric sockets and a ratchet,use a c clamp to push back the caliper piston.remove the caliper mount bracket and rotor is out reverse install. now for the back if rotors have emergency brake using the same pads then you will have to buy a special tool to help you screw in the caliper piston tool costs lees then ten dollars.small cube with universal pins on each side also to be used on other vehicles.
the service light needs to be re-set using a european scan tool,capable of communicating with the on-board computer. the scan tool at the parts places will NOT work
You Can probably accomplish this yourself if you have a brake pad warning light or ABS/ASC light on you may need a BMW tech to reset the system to complete the job.
'B6' (2001-2004) A4s dont have seperate rotors on the rear brakes like the pre 2001 A4s do. When changing the rear pads + discs the only special tool you will need is a caliper wind back tool. Let me know if you do also need to replace any ABS components aswell as I might be able to advise.
BMW rotors are not known for lasting very much more than 30-45k miles. When the brakes are inspected, they measure the pads using a special tool threw the outer brake pad. Min spec is 3mm. When the pads are replaced, they measure the thickness of the rotors. The rotor spec is stamped on the rotor. if they are under that spec, they recommend replacing them as well. Next time you bring it in for service, just ask them to measure the rotor thinkness, (its not a huge task, all they have to do is take the wheels off). But more often than not, the rotors wear just as fast as the pads.
If it's like most BMW brake rotors you don't remove the center nut to remove the rotor. You should see a slotted screw in the rotor a couple of inches out from the center. Remove it and the rotor comes off. Might have to tap rotor with a rubber mallet but it should come right off.
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