Rear No 11 fuse keep blowing!!

7389 Views 8 Replies 5 Participants Last post by saleen351, Mar 28, 2015

saleen351

Discussion Starter · Mar 26, 2015

Hello everybody,
I bought 1995 S320 L US version with some issues. Actually they told me engine was seized and got it at very reasonable price.

Found out that lower engine wiring harness was never replaced. Biodegradable bad wiring. I checked the main engine harness and it seems updated one dated 98.
Anyways i saw an ugly aftermarket switch that turned out direct starter switch. You can turn in ignition with the key but can not crank. This seemed a good news for me considering that engine was seized.

I fixed the lower wiring harness and still not successful to crank the vehicle with the key. Ignition switch seems ok and has enough tension on crank position.

I see that i can use button on remote control and lights are illumination on door handles but power locks are not working. Vacuum soft close doors are working fine. I checked the rear fuse panel and saw number 11 fuse was missing. I put new 20 amp fuse and compartment lights were turned on. I tried to lock the vehicle but no power locks and immediately fuse was blown. When i push lock/unlock button on dashboard it makes a funny steady noise while pushing which seems coming behind passenger airbag.

I tried to scan the car from main port through engine compartment with DAS but it says turn on the ignition even it is ON.

Does number 11 fuse have anything to do with cranking problem or something seperate?

I am open to any suggestions and ideas.

Than You

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Merc-S600

· #3 · Mar 27, 2015

@;Thom already answers the fuse problem .You mention that they told you that the engine was seized , a seized engine by my books has the cylinders blocked and it won't ever turn over ,that could be part of your problem .
When you turn the key trying to start the engine ,some wires might run hot resulting in burning fuses ,be careful and ad some more info here .
Other then that Congrats on the purchase & I hope it won't cost you to much on top to get her going ,even that I would arange a newer engine straight away ,easy found for your model .:thumbsup:

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Merc-S600

· #5 · Mar 27, 2015 (Edited)

Jayare said:
Have you tried turning the motor over by hand using a breaker bar/socket on the crank bolt? Turn clockwise ONLY when facing the motor from the front.

Once we had an old Dodge truck ,2tonner ,the engine seized ,what we did is take the spark plugs out & filled the cylinders with Diesel and oil , let it soak overnight then tow started it with a chain behind another truck ,took a fair few goes before wroom the engine came out of its seizure ,It took a lot of tyre squeaks etc but once we added a bit of weight on the back so the tyres don't slip anymore that was the trick.
His car being an automatic there is a way ,read the manual when you/he can insert gear to try a jumpstart,I think if I remember correctly on the w140's you can jumpstart it when you reach 30 or 40 km/ h ,then shift from N to D and not from P to D due to the reverse gear crossing ,maybe it works out and hasn't seized real bad yet .
The hand cranking didn't work unfortunately on our truck but a good idea Jayare ,it certainly is worst a try .:thumbsup:

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