gramey
Senior Member
- Joined
- Jul 23, 2016
- Messages
- 819
- Reaction score
- 253
- Location
- Ipswich, Suffolk
- Your Mercedes
- 2003 SL350
Up until a few months ago whenever I went to my car and it unlocked, keyless go, there would be a buzzing/whirring noise from under the bonnet. I presumed this was the SBC priming itself and from reading a quote by Alastair in another thread this would appear to have been correct?
"When you turn the key to ignition position do you get a buzzing noise.
Buzzing = SBC
No buzzing and you're good to go."
More recently however it's taken to doing it sometimes and not others, the car drives perfectly and there are no warning lights or error messages on the dash. I know the SBC unit was replaced by Mercedes prior to me buying the vehicle 2 1/2 years ago, the car has now covered 96,000 miles.
So the question is should this be a cause for concern or could it simply be something to do with the frequency with which I use or don't use the car as this does vary.
"When you turn the key to ignition position do you get a buzzing noise.
Buzzing = SBC
No buzzing and you're good to go."
More recently however it's taken to doing it sometimes and not others, the car drives perfectly and there are no warning lights or error messages on the dash. I know the SBC unit was replaced by Mercedes prior to me buying the vehicle 2 1/2 years ago, the car has now covered 96,000 miles.
So the question is should this be a cause for concern or could it simply be something to do with the frequency with which I use or don't use the car as this does vary.
