Electrical Issue?
Thread Starter
Newbie
Joined: Nov 2021
Posts: 3
Likes: 0
ML500 2006
Electrical Issue?
I’ve seen a number of similar symptoms described on these pages, but I cannot find a solution. Please help, any suggestions are welcome, but please read the whole description.
The problem; After many different and varied problems, essentially starting with water ingress, my 3 mechanics have gotten to the point of a running vehicle… however, when I start the vehicle, the electrics go berserk and the vehicle will not go into gear or do ANYTHING normal until after 15 mins. One the car is warmed up, by sitting idling for 15 mins, switch off and restart and EVERYTHING is normal.
To re-integrate that point, if I then park and leave it for a couple of hours it will require a shorter warm-up period before working.
Now the difficult stuff, I have replaced the rear SAM, and dash/display module, batteries (both) and probably a bunch of other things.
So reading through other peeps problems I think some of them may have been a similar issue, It took some time for my mechanic to work out that it would work after warming up. I’ve read a number of peoples ‘randomly’ won’t go into gear posts and wonder if they had allowed to car to warm up, would it have worked.
Thanks in advance for any help, I love this car and would like to fix her.
The problem; After many different and varied problems, essentially starting with water ingress, my 3 mechanics have gotten to the point of a running vehicle… however, when I start the vehicle, the electrics go berserk and the vehicle will not go into gear or do ANYTHING normal until after 15 mins. One the car is warmed up, by sitting idling for 15 mins, switch off and restart and EVERYTHING is normal.
To re-integrate that point, if I then park and leave it for a couple of hours it will require a shorter warm-up period before working.
Now the difficult stuff, I have replaced the rear SAM, and dash/display module, batteries (both) and probably a bunch of other things.
So reading through other peeps problems I think some of them may have been a similar issue, It took some time for my mechanic to work out that it would work after warming up. I’ve read a number of peoples ‘randomly’ won’t go into gear posts and wonder if they had allowed to car to warm up, would it have worked.
Thanks in advance for any help, I love this car and would like to fix her.
Senior Member
Joined: Oct 2015
Posts: 397
Likes: 23
From: Queensalnd Australia
2006 ML320 CDI (2 of) and 2008 GL320
Just confirming that there was no sign of water under the right front seat. The front sam is in that well with batteries and it is very low if driving over water. Or leaking in
other than not going into gear are there any other symptoms? Sounds like there is but the more info the better.
does the horn work?
other than not going into gear are there any other symptoms? Sounds like there is but the more info the better.
does the horn work?
Thread Starter
Newbie
Joined: Nov 2021
Posts: 3
Likes: 0
ML500 2006
Just confirming that there was no sign of water under the right front seat. The front sam is in that well with batteries and it is very low if driving over water. Or leaking in
other than not going into gear are there any other symptoms? Sounds like there is but the more info the better.
does the horn work?
other than not going into gear are there any other symptoms? Sounds like there is but the more info the better.
does the horn work?
I am uploading a video of the dash going berserk on startup, I must stress though that when it is ‘warmed up’ this all goes away.
Last edited by Stu - A Gentlem; Nov 26, 2021 at 05:39 PM.
