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Engine will not start

Tiny
PROPICTURETAKER
  • MEMBER
  • 1994 MERCEDES BENZ 500SL
  • 34,600 MILES
My 1994 Mercedes Benz SL500 will not start. It has less than 35000 original miles, new battery, and new fuses. I have disconnected the battery to reset the anti theft device. I have made sure all doors, trunk and hood and gas cap are closed properly. Then I locked the car, waited a couple minutes and unlocked the car. All lights on dash come on but car won't turn over.
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Saturday, August 4th, 2012 AT 4:06 PM

19 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Is the security light on solid or flashing?Also do you have a multimeter?
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Saturday, August 4th, 2012 AT 4:30 PM
Tiny
PROPICTURETAKER
  • MEMBER
  • 5 POSTS
The security light is not on and does not flash. I have a multimeter that I used to check fuses prior to replacing them.
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Saturday, August 4th, 2012 AT 5:49 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
So the starter is inop correct?
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Saturday, August 4th, 2012 AT 7:28 PM
Tiny
PROPICTURETAKER
  • MEMBER
  • 5 POSTS
I don't know. It started yesterday and now it won't. A local Mercedes Benz mechanic told me that it was a bad fuse. I don't know where the fuse is located that controls the ignition.
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Saturday, August 4th, 2012 AT 7:44 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
I need to know if the starter works or not so I can help you?Does the starter rotate the engine around?
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Saturday, August 4th, 2012 AT 7:49 PM
Tiny
PROPICTURETAKER
  • MEMBER
  • 5 POSTS
No, the engine does not turn over at all.
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Saturday, August 4th, 2012 AT 8:02 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Hey,

Here is a awesome guide on how to fix an engine that does not start.

https://www.2carpros.com/articles/car-cranks-but-wont-start

Please run some tests and get back to us so we can continue helping you.

Best, Ken
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-1
Wednesday, February 15th, 2017 AT 2:46 PM
Tiny
CHEWYS
  • MEMBER
  • 2 POSTS
  • 1986 MERCEDES BENZ 500SL
  • V8
  • 2WD
  • AUTOMATIC
  • 147,000 MILES
Car has sat for 2 years. It ran when parked. It will run with ether and it appears to have fuel pressure when line to fuel body is cracked. But car won't start
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Wednesday, February 15th, 2017 AT 2:46 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Check to make sure you are getting power to the injectors. You will need a noid light to do that. Most parts stores will lend them to you.
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Wednesday, February 15th, 2017 AT 2:46 PM (Merged)
Tiny
HMDTMMYWAY
  • MEMBER
  • 2 POSTS
  • 2006 MERCEDES BENZ 500SL
  • V8
  • FWD
  • AUTOMATIC
  • 48,000 MILES
2006 Mercedes 500S - it is below freezing outside and the car won't start - could it be that there is ice in the exhaust - or could it be the battery even though the key works and lights go on. Car regularly serviced with no problems - Do you think this has to do wth he extreme cold?
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Wednesday, February 15th, 2017 AT 2:46 PM (Merged)
Tiny
BMWTECHWAQAS
  • MECHANIC
  • 19 POSTS
When was the last time did you change the battery? 4 years old battery def can give you issues. I would check that 1st.
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Wednesday, February 15th, 2017 AT 2:46 PM (Merged)
Tiny
HMDTMMYWAY
  • MEMBER
  • 2 POSTS
Thanks for responding. I had a new battery put in by the dealership last March (it is less than a year old). When the old battery required a jump, the smart key wouldn't work. Since the key works and lights go on, I don't think it is the battery. Since the car has been regularly serviced, I can only surmise that the cold weather is affecting something ( it is 3 degrees out). And - of course - I cannot afford to take it to the Dealer anymore. Any hope that it might start when the weather gets warmer? Thanks again.
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Wednesday, February 15th, 2017 AT 2:47 PM (Merged)
Tiny
BMWTECHWAQAS
  • MECHANIC
  • 19 POSTS
Did you find anything with your vehicle?
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Wednesday, February 15th, 2017 AT 2:47 PM (Merged)
Tiny
CARLOSAPA
  • MEMBER
  • 2 POSTS
  • 1993 MERCEDES BENZ 500SL
  • V8
  • 2WD
  • AUTOMATIC
  • 149,000 MILES
Electrical problem
1993 Mercedes Benz 500sl V8 Two Wheel Drive Automatic 149000 miles

Parked car and next day wouldnt' start. Bought a new battery, but did not solve problem. Check all fuses and they are O.K. Can I get some help. (It seems to be something simple, but I am lost). Carlos.
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Wednesday, February 15th, 2017 AT 2:47 PM (Merged)
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Hi
When you say won't start do you mean it 's not cranking or it cranks but won't run?
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Wednesday, February 15th, 2017 AT 2:47 PM (Merged)
Tiny
CARLOSAPA
  • MEMBER
  • 2 POSTS
Do not crank or anything. All ligths show in dashboard.
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Wednesday, February 15th, 2017 AT 2:47 PM (Merged)
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
There are several possibilities Ignition switch, starter lockout relay, starter solenoid/motor and shift lockout switch. So to find out need to place a volt meter or test light on the starter solenoid ignition terminal turn key to see if voltage is present. Also place shifter in neutral try and start.
Let me know
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Wednesday, February 15th, 2017 AT 2:47 PM (Merged)
Tiny
MERCEDES1991
  • MEMBER
  • 1 POST
  • 1991 MERCEDES BENZ 500SL
  • V8
  • 88,000 MILES
I own a 1991 Mercedes-Benz sl500 and ive recently got it running after much effort. Whenever I turn the key the engine turns over with no problem but it doesnt start every time. Most of the time I have to use ether to get it started. Once its started whenever I try to race the engine is dies down and makes a continuous popping sound and if I dont release the gas it with stall. Please help :(
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Wednesday, February 15th, 2017 AT 2:47 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the fuel pressure if its within specs to rule out the fuel filter and fuel pump -start here
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Wednesday, February 15th, 2017 AT 2:47 PM (Merged)

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