M5 JERKING

[M5vaid]

Hi all,
I bought a an M5 a couple of weeks ago and just noted that when I sometimes pull in traffic the car will jerk forward. It settles very quickly and no other problems are noticed. It seems if I pull off too quickly in AUTO mode form STOP / START it does this. It seems like the gears are not engaged in time. if I do it slowly and pull off gently it is better.
Just checking if others get this?
happy m5 owner

[w8pmc]

Which M5?

[peteA]

F10 judging by the OPs other thread - you need to apply the throttle gently until you move off or use the 'tap technique' where you tap the accelerator pedal to engage the clutch and then re-apply throttle. Either work but which is best depends on the circumstances.

If you stab the throttle the clutch engagement is too sudden and you get what you've been experiencing.

Just a characteristic of the car / gearbox and something to get used to

[peteA]

Oh ...meant to add...switch the stop start off...it's pointless!

[M5vaid]

Thank you. Yes it's a F10. 2015.
I will be more gentle. How do you turn start stop off ?
Thanks

[peteA]

It's the button directly under the engine start button - it looks like it forms part of one switch and the start/stop button looks like a sort of bezel around the engine start button but the bit at the bottom is a switch with a small orange light. Hopefully this makes sense when you are looking at it!

A symbol will appear in the main display when you press the button.

Annoyingly it resets to on each time the ignition is switched off.

[skeeterm5]

It seems to switch off if you have the car in sport plus manual mode too

[theboss]

skeeterm5 said:

It seems to switch off if you have the car in sport plus manual mode too

it switches off whenever the DCT is in any one of the manual modes. I often put the car in manual mode approaching a junction just to override the auto stop/start.

[vmackie]

My routine for starting the car includes switching the start stop off every time. Also I usually switch to efficient setting for the throttle response when in town. I find this makes for smoother progress at roundabouts/junctions etc

[Wills2]

The main issue I had with the M5 was it would sometimes select 2nd randomly at a standstill and if you didn't notice and tried to nip out thinking you were in 1st you'd find the delicate touch needed for 1st gear didn't cut the mustard in 2nd, leaving you hanging for a second or two.

[wolfracesonic]

Saw the thread title and thought WTF, I only use mine for driving about in!

[Sadface]

Not sure if my recent problem relates to your ,I have a e60 m5 that had all the symptoms yours has..my fault turned out to be the mechatronix module ( ecu within the g/box its self) I do have warranty thank god think the cost would have been a few grand

[Robbidoo]

About to buy an F10 so have been reading the manual - there is a feature where if after coming to a stop you briefly press the brake hard, it won't stop the engine.

[MDifficult]

Wills2 said:

The main issue I had with the M5 was it would sometimes select 2nd randomly at a standstill and if you didn't notice and tried to nip out thinking you were in 1st you'd find the delicate touch needed for 1st gear didn't cut the mustard in 2nd, leaving you hanging for a second or two.

On the plus side, though, I understand they do this to even-out the wear on 1st gear (by sharing some of the load with 2nd). One of the reasons the clutches in the DCT last as long as they do.

[jm doc]

If you have the throttle setting in sport plus mode it's very sensitive and can cause this, sometimes even going into "kangaroo" mode if you're not careful (anyone who has experienced this will know exactly what I mean!)