S-Class (W220) 1999-2006: S 320 CDI, S 320, S430, S 500, S 600

W220 S500 Mercedes not turning on

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Old Dec 1, 2023 | 07:45 PM
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s500 2002 w220
W220 S500 Mercedes not turning on

Hello ,

I have a s 500 2002 w220 and I recently locked my keys in my trunk and tried to get into it by following a youtube video where I removed a fuse from the fuse box that it is located in the back seat. When I was moving it the lights in the cabin stoped working and the car does not turn on but it cranks. How can I fix it?
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Old Dec 1, 2023 | 07:49 PM
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S55
Hey, did you took a look here?: https://w220.wiki/Trunk
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Old Dec 1, 2023 | 07:53 PM
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s500 2002 w220
Originally Posted by suf3r
Hey, did you took a look here?: https://w220.wiki/Trunk

Hey thanks but I was able to get into the trunk but when I was moving the fuse box something happened and all the cabin electronics stoped working and now the car wonts start anymore
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Old Dec 2, 2023 | 02:11 AM
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W220 S320
Originally Posted by lali
Hey thanks but I was able to get into the trunk but when I was moving the fuse box something happened and all the cabin electronics stoped working and now the car wonts start anymore
This sounds like your battery is dead.
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Old Dec 2, 2023 | 02:21 AM
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Why were you moving the fuse box ?
you either shorted something out , fried the SAM or prefuse block , or if you’re lucky the battery is just dead from sitting
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Old Dec 2, 2023 | 09:54 AM
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s500 2002 w220
Originally Posted by tusabes
Why were you moving the fuse box ?
you either shorted something out , fried the SAM or prefuse block , or if you’re lucky the battery is just dead from sitting
is there any way I can test the Sam or the perfuse box. The battery is not dead. I put a new one and its still same . Nothing in the car cabin works. Besides the dash and the car cranks but doesn’t turn on.
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Old Dec 2, 2023 | 10:15 AM
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'06 MB S55 AMG; '04 Audi Allroad 4.2; '05 BMW M3 Conv.; '92 MB 500E
Crank Position Sensor for no start… https://w220.wiki/Crankshaft_position_sensor

Rear SAM for interior electronics… https://w220.wiki/SAM_(Signal_Acquis...tuation_Module)

SAM problems are rare unless there’s been water intrusion into the car. If you encountered no water during your recent work, I’m going to say it’s not the SAM. Replace the CPS to see if she fires up, then check all interior fuses and connections. At this age it’s not a bad idea to simply replace them all.

GL

maw
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Old Dec 2, 2023 | 01:10 PM
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s500 2002 w220
[QUOTE=maw1124;8886202]Crank Position Sensor for no start… https://w220.wiki/Crankshaft_position_sensor

Rear SAM for interior electronics… https://w220.wiki/SAM_(Signal_Acquis...tuation_Module)

SAM problems are rare unless there’s been water intrusion into the car. If you encountered no water during your recent work, I’m going to say it’s not the SAM. Replace the CPS to see if she fires up, then check all interior fuses and connections. At this age it’s not a bad idea to simply replace them all.

Would the CPS affect the electronic too? I don’t believe water went inside. It was raining when I was fixing it. It open the door for like 30 seconds and closed it.
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Old Dec 2, 2023 | 01:49 PM
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It is definitely not the CPS, it’s most likely the Prefuse block. There are two

one on under the front passenger floor, carpet, and one in the trunk by the battery.
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