I have a 540i 2001 bmw. while i was driving it yesterday it simply just shut off and would not start back up. Vehicle would crank, however would not start. It sounds like and acts like it's not getting fuel, but there is over a half a tank of gas in it. How do i replace the fuel pump.

SOURCE: 1995 BMW 540I starts well cold, then dies out

I would check the fuel pressure just after starting and again after 10-15 minutes (or before it dies). Sounds like a fuel delivery problem. Could be a stuffed up filter, or the fuel pump could be dying. I had a Volkswagen some years ago and it had two fuel pumps, a large one up in the engine bay and a small "helper" in the gas tank. The one in the gas tank was bad but the bigone was fine, so I'd start the car normally, drive for about 20 minutes, then the car would die and not want to start again until it had cooled off. Maybe you have the same setup.

Gilbert Labont?

• 195 Answers
• Posted on Jul 08, 2009

SOURCE: 1999 bmw 540i automatically shuts off

It sound dumb, but check if both battery posts are OK. Pull on both of them one after the other to make sure they wont budge at all. Cause i had this problem once where the negative post had broken, but inside the battery where the post and the plates that make up the battery's cells become one. But since the post was still sitting in the battery, it touched just enough to give the car juice to start and all, but when i hit a big enough bump, the post jumped up so the car had no more ground, and with no ground to work with, the spark plugs can't make any fire so the engine dies apparently for no reason. So even if it sound weird or dumb, check that out first cause it would be the thing that makes you search the longest. If everything regarding the battery is fine, then i'm guessing a problem with a body ground or grounding strap somewhere. Might either be the grounds regarding the engine that give it the possibility to fire and such, or might be the grounds and/or fuses and connectors that make the car's onboard computer work.

SOURCE: How do we reset our 2000 BMW 540i Fuel safety

buy manual ,check owners manual for location

SOURCE: 2001 reset oil bmw 540i

http://www.unitedbimmer.com/forums/e12-e28-e34-e39-e60/9887-e39-resetting-service-indicator-lights.html hope this helps you.

Mike LaPres

• 757 Answers
• Posted on Dec 16, 2009

SOURCE: 2003 BMW 325i - Car won't start. It will crank the (rrr rrr rrr)

Get a DTC scanner and see what it says...in the meantime, check that fuel pump relay and fuel pump. The humming sound is probably the heater blower motor or part of the HVAC system winding down after disconnecting from power.