Starting problem - The Unofficial BMW M5 Messageboard (m5board.com)

///M5 Touring · 11th February 2009, 00:46

my e34 m5 has a problem,

when i turn the key it wouldnt start. nothing happens.

i checked det starter and its as good as new.

is it the key ignition that is the problem?

i have heard that its a "tap" in there that breaks and it wouldnt start.

i dont have ews on my car.

davidoli · 11th February 2009, 01:23

Do you get any dashboard lights on when you turn the key ?

D

///M5 Touring · 11th February 2009, 10:33

Yes i do

IvanDias · 11th February 2009, 11:31

Hi,

If the dash lights come on as normal, but when the key is turned they flicker and you hear a light "fluttering" noise, it's likely to be a flat or dead battery. Stick a multimeter on the battery and read off the charge level.

Do you get the battery light come on with the dash lights on initial key turn or does it stay off? If it's staying off, it's possibly a failed volatage regulator on the alternator, which has led to the flat battery.

Hope you get it fixed!

Regards
Ivan

///M5 Touring · 11th February 2009, 13:11

It charges 13,9 volt. The battery is 2 months old

///Manuel · 11th February 2009, 19:24

Can you jump the car?
Since the battery was recently changed maybe the cables weren't tightened correctly?
Any corrosion from the previous battery?

davidoli · 11th February 2009, 19:55

Are you saying that when you turn the key fully , the car does not even crank i.e. the starter motor doesn't engage ?

If so , there is a possibility that your key / ignition assembly / barrel is at fault , which I can elaborate on if this is your issue .

D

farrell · 11th February 2009, 20:42

What method has been used used to test the operation of the Starter motor / solenoid ?

Cheers

///M5 Touring · 12th February 2009, 00:08

Quote:

Originally Posted by ///Manuel

Can you jump the car?
Since the battery was recently changed maybe the cables weren't tightened correctly?
Any corrosion from the previous battery?

yes i can jump start the car. if you mean i can push it forwards and engage the clutch in 2nd gear

///M5 Touring · 12th February 2009, 00:10

Quote:

Originally Posted by davidoli

Are you saying that when you turn the key fully , the car does not even crank i.e. the starter motor doesn't engage ?

If so , there is a possibility that your key / ignition assembly / barrel is at fault , which I can elaborate on if this is your issue .

D

yes that is correct. you know how to fix?