
Uncle Erick was wrong on this one. Fuel tanks do not need to be replaced - or even disassembled from the car to replace the Fuel pumps, these are as always beneath the rear seats the pumps do have a sediment sieve, but isn't the actual fuel filter. The actual fuel filter is underneath the vehicle covered by undertrays - these are not specified to be replaced for the life of the vehicle in Australia since about 2000ish - or since the M54 motors were introduced. Diesel BMWs only appeared on the Australian market since about 2006 - their filters tend to be under the vehicle as always, they're specified to be changed in due time.
A regular "mechanic" may try to drop the tank to fit the fuel lines and pumps into the tank...a qualified technician knows dropping the tank wont help and patiently fits it all "blind", ie, unable to see at all with his 1 arm in the 1 hole to feed two fuel pumps and lines...going purely by "feeling" his way around...in the process squirting fuel in his eyes and getting a petrol high from all the gas fumes. The current crop are a pain in the royal ass.
It was getting ridiculous with new cars...I had to rip the front bar and front 1/4 panel of the X6 to replace a blown headlight light globe, I had to remove the headlight...which I couldn't unless I stripped the panels away! I have since left the trade.
He was right about the current crop of BMWs needing to "reset" the battery state in the engine electronics everytime the battery is replaced...but there is nothing stopping someone from changing the battery themselves. This "battery monitor" is simply a kind of "black box" where technicians can monitor your battery history, how many times you ran the battery flat by not driving it enough, or leaving the ignition on for too long. They can use this to deny warranty replacement of the battery as damage was done due to customer negligence.
The rich are smart...they drive a car only for as long as it's within warranty. The car gets replaced once warranty is out with a new one. This is how manufacturers like it.
Thats a relief. I though BMW had completely lost it.
In E39 diesels there is a fuel filter is in the engine room too, on the righthand side. A big highpressure (I think it is called. or was it heavyduty...) filter and that definetly needs to be changed periodically as it does get clogged up as time passes.










