View Single Post
Old 12-09-2015, 04:55 PM   #11 (permalink)
mfeinst
Enthusiast Member
 
mfeinst's Avatar
 
Join Date: May 2012
Location: Greater Philly Area
Posts: 272
Drives: Mercedes C43 AMG
Rep Power: 13
mfeinst is on a distinguished road
Default

Quote:
Originally Posted by dragonbreath View Post
I was just about to say, it sounds electrical to me. A motor, an actuator, or a relay of some sort. Maybe steering lock? Have you done anything with that? Is the fuse pulled? Do you have one? Etc.

Im not saying thats it, just trying to throw out ideas.

I have a 2012, so I don't think it's steering lock. Haven't done anything with it, but I'm going to look -- I found this diagram on a parts site, and this is exactly where the sounds seems to be coming from:



Looks like the reverse light relay and the heated seat (or HVAC-related) relay.

I'm trying to think which relays would only be active when the car is:

1. under load (usually moderate-heavy, but sometimes light) (i.e., not when revving in neutral or with syncrorev).

2. Turning the engine upon start ~ 30% of the time when starting the car.

Getting warmer, maybe....
__________________

F.I. TT Kit -- GT2860RS [500rwhp/449ft-lbs @ 9psi][/B][/I] CAR SOLD...
mfeinst is offline   Reply With Quote