engine wont turn off
Newbie
Joined: Oct 2024
Posts: 1
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(Late-2007) E350 4Matic
Thank you!
I suspected water got into my fuse box; when i washed my car off before leaving yesterday morning..
Wipers started flicking on about 25 miles down the road..
and car wouldnt shut off at the gas station
wouldnt shut off when i pulled the battery
wouldnt shut off when i pulled the ignition and ecu fuses..
had to disconnect the engine harness from the fuse block
(front wire plugin located in the front of the fuse box)
i called mercedes yesterday complaing about it needed to be a safety recall due to my wipers not working after i tried to shut off my car...and how they were a distraction when i was driving when it wasnt raining..
about to go out and dry it with a hairdryer
I suspected water got into my fuse box; when i washed my car off before leaving yesterday morning..
Wipers started flicking on about 25 miles down the road..
and car wouldnt shut off at the gas station
wouldnt shut off when i pulled the battery
wouldnt shut off when i pulled the ignition and ecu fuses..
had to disconnect the engine harness from the fuse block
(front wire plugin located in the front of the fuse box)
i called mercedes yesterday complaing about it needed to be a safety recall due to my wipers not working after i tried to shut off my car...and how they were a distraction when i was driving when it wasnt raining..
about to go out and dry it with a hairdryer
Just fixed this problem tonight on my CLS.
I've just had the car valeted and the jet wash has obviously sprayed inside the fuse box under the bonnet.
Step 1 - Open the bonnet and on the driver's side (UK) is a fusebox. There are two slide tabs which lock this in place. You need to slide these to be able to take the top of the fusebox off.
Step 2 - On the right side of the fusebox are two relays - these are little boxes about 1" squared that are fixed into place by pins. These pull out fairly easily by hand. They are probably white-ish in colour
Step 3 - Pull out the relay closest to the steering wheel - BUT BEFORE YOU DO, NOTE THE SMALLER RELAY JUST INFRONT OF IT.
Step 4 - Having pulled the relay out the engine should have stopped. BUT NOW THE HORN IS SOUNDING VERY LOUDLY. Pull out the smaller relay just in front of the one you just pulled out. This will stop the horn.
Step 5 - Pour yourself a drink.
Step 6 - You now need an extension lead and a hairdryer. Water has got into the fuse box and needs to be dried up. Chances are you need to go at it for about 5-10 minutes to dry everything.
Step 7 - Put the key in the ignition and replace the two relays. Turn the car on. Turn off. Lock it. Open it. Turn on. Turn off.
Step 8 - Pour a second drink.
If you have any form of roadside assistance, call them out if you need to remove any outstanding error codes this fault has created and won't switch off.
Safe journey
M
I've just had the car valeted and the jet wash has obviously sprayed inside the fuse box under the bonnet.
Step 1 - Open the bonnet and on the driver's side (UK) is a fusebox. There are two slide tabs which lock this in place. You need to slide these to be able to take the top of the fusebox off.
Step 2 - On the right side of the fusebox are two relays - these are little boxes about 1" squared that are fixed into place by pins. These pull out fairly easily by hand. They are probably white-ish in colour
Step 3 - Pull out the relay closest to the steering wheel - BUT BEFORE YOU DO, NOTE THE SMALLER RELAY JUST INFRONT OF IT.
Step 4 - Having pulled the relay out the engine should have stopped. BUT NOW THE HORN IS SOUNDING VERY LOUDLY. Pull out the smaller relay just in front of the one you just pulled out. This will stop the horn.
Step 5 - Pour yourself a drink.
Step 6 - You now need an extension lead and a hairdryer. Water has got into the fuse box and needs to be dried up. Chances are you need to go at it for about 5-10 minutes to dry everything.
Step 7 - Put the key in the ignition and replace the two relays. Turn the car on. Turn off. Lock it. Open it. Turn on. Turn off.
Step 8 - Pour a second drink.
If you have any form of roadside assistance, call them out if you need to remove any outstanding error codes this fault has created and won't switch off.
Safe journey
M
