Starting problem resolved

PKM3 · 02-21-2011, 03:37 AM

Still discovering something new about my M3 every week. The other day, I could not start my M3. Foot on brake pedal as usual, press Start button several times and no-start. Got a prompt on my display that stated to press start again. Tried that a few times - no luck. Then, I realised earlier that day, I was pumping the brake pedal with the engine OFF until the pedal hardened up (pedal depression diminishes with each press). This releases the vacuum in the brake booster. I discovered that I had to press the brake pedal much more firmly than usual to start the car - if only the display stated to press brake pedal, I would have realised I needed to press down hard to start, rather than giving me the 'bum steer' message that if I pressed start button again, it might start. I don't know, maybe a good trick to prevent your other 'half' from driving it...

donovan · 02-21-2011, 04:29 AM

Weird shit!

Ctm309 · 02-21-2011, 07:45 AM

Normal, the pedal has to travel to the point it release's the kill switch. Had it happen to me.

02-21-2011, 03:37 AM	#1
PKM3 Engineer 6 Rep 18 Posts Drives: E92 M3 2010 Join Date: Feb 2011 Location: Australia iTrader: (0)	Starting problem resolved Still discovering something new about my M3 every week. The other day, I could not start my M3. Foot on brake pedal as usual, press Start button several times and no-start. Got a prompt on my display that stated to press start again. Tried that a few times - no luck. Then, I realised earlier that day, I was pumping the brake pedal with the engine OFF until the pedal hardened up (pedal depression diminishes with each press). This releases the vacuum in the brake booster. I discovered that I had to press the brake pedal much more firmly than usual to start the car - if only the display stated to press brake pedal, I would have realised I needed to press down hard to start, rather than giving me the 'bum steer' message that if I pressed start button again, it might start. I don't know, maybe a good trick to prevent your other 'half' from driving it...
	Appreciate 0 Tweet Quote

02-21-2011, 04:29 AM	#2
donovan Brigadier General 371 Rep 4,167 Posts Drives: R8 - Ford Raptor Join Date: Aug 2008 Location: National iTrader: (17)	Weird shit! __________________ Audi R8 v10 Ford Raptor m3e46freak@yahoo.comfor all euro parts!! ebay/craigslist verified/ m3post/e46fanantics/m3forum/zpost/bimmerforum
	Appreciate 0 Quote

02-21-2011, 07:45 AM	#3
Ctm309 First Lieutenant 15 Rep 361 Posts Drives: '09 M3 AW Carbon roof DCT '11 Join Date: Oct 2009 Location: Norwalk, Ct./Port Washington, N.Y. iTrader: (7)	Normal, the pedal has to travel to the point it release's the kill switch. Had it happen to me.
	Appreciate 0 Quote