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W204 not cranking

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Old Apr 29, 2024 | 02:20 PM
  #1  
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W204 C250
W204 not cranking

Hello everyone My C250 2012 was having a low battery, i was jumping it and everything was fine, i got a vacation for a while and came back to turn it on but it won't even with jumping, so i changed the battery with a new one but still it's not cranking, now those symbols are on the dash and stereo. Anyone faced this issue before or how can i start my car at least to take to a garage?

We transfer link for the video as well

https://we.tl/t-EogrRkugco
Thanks
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Old Apr 29, 2024 | 03:16 PM
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What symbols?

When you put the key in and turn it to "on" do all the lights on the dash come on? Does the steering wheel turn?

You may have an issue with the starter.

Try checking in the front fuse box under the hood. The starter is fuse # 7.





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Old Apr 29, 2024 | 07:36 PM
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Originally Posted by W204 owner
Hello everyone My C250 2012 was having a low battery, i was jumping it and everything was fine, i got a vacation for a while and came back to turn it on but it won't even with jumping, so i changed the battery with a new one but still it's not cranking, now those symbols are on the dash and stereo. Anyone faced this issue before or how can i start my car at least to take to a garage?

We transfer link for the video as well

https://we.tl/t-EogrRkugco
Thanks
I'm not clicking a link I'm not familiar with from a member that just joined. Post pics.
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Old Apr 30, 2024 | 12:40 AM
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W204 C250
Originally Posted by cvx5832
I'm not clicking a link I'm not familiar with from a member that just joined. Post pics.
Oh sure you have the right to, and am really sorry i thought that the photos were uploaded, the link is for a video of me trying to start the car, because it's more than 20mb.

Anyhow I'll edit the thread and add the photos
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Old Apr 30, 2024 | 12:43 AM
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Originally Posted by TimC300
What symbols?

When you put the key in and turn it to "on" do all the lights on the dash come on? Does the steering wheel turn?

You may have an issue with the starter.

Try checking in the front fuse box under the hood. The starter is fuse # 7.



I checked all fuses in the car all are ok, i even tried to override cranking from the starter relay, the engine would crank but it won't go to start
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Old Apr 30, 2024 | 12:45 AM
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Originally Posted by W204 owner
Hello everyone My C250 2012 was having a low battery, i was jumping it and everything was fine, i got a vacation for a while and came back to turn it on but it won't even with jumping, so i changed the battery with a new one but still it's not cranking, now those symbols are on the dash and stereo. Anyone faced this issue before or how can i start my car at least to take to a garage?

We transfer link for the video as well

https://we.tl/t-EogrRkugco
Thanks




Reply
Old Apr 30, 2024 | 09:20 AM
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Interesting as you seem to have more than one error here. Curious, has this car been sitting out in the weather? Has water gotten into the cabin or trunk?
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Old Apr 30, 2024 | 10:08 AM
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Originally Posted by cvx5832
Interesting as you seem to have more than one error here. Curious, has this car been sitting out in the weather? Has water gotten into the cabin or trunk?
Nope it was parked only with no water anywhere
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Old Apr 30, 2024 | 11:18 AM
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Is the car parked outside?

I did a little searching around and all these faults may come from water getting inside the car and contacting wires/connectors/units.

The front drain ducts are known to get plugged and allow water to back up into the car. The fasteners around the trunk trim get old and brittle/fall apart and allow water in.

You will have to peel back the carpet in the drivers/passenger side floor to check. Go in the trunk and lift up the floor and look under the spare tire for water pooling under it. Even I had a leaky trunk I had to fix.

This is where i would start.
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Old May 1, 2024 | 12:19 PM
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W204 C250
Originally Posted by TimC300
Is the car parked outside?

I did a little searching around and all these faults may come from water getting inside the car and contacting wires/connectors/units.

The front drain ducts are known to get plugged and allow water to back up into the car. The fasteners around the trunk trim get old and brittle/fall apart and allow water in.

You will have to peel back the carpet in the drivers/passenger side floor to check. Go in the trunk and lift up the floor and look under the spare tire for water pooling under it. Even I had a leaky trunk I had to fix.

This is where i would start.
Many thanks for the reply, the car was parked inside the building and there's no signs for water 😕
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Old May 15, 2024 | 05:20 AM
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W204 C250
Originally Posted by W204 owner
Hello everyone My C250 2012 was having a low battery, i was jumping it and everything was fine, i got a vacation for a while and came back to turn it on but it won't even with jumping, so i changed the battery with a new one but still it's not cranking, now those symbols are on the dash and stereo. Anyone faced this issue before or how can i start my car at least to take to a garage?

We transfer link for the video as well

https://we.tl/t-EogrRkugco
Thanks
For reference the issue is the ECU was fried due to multiple tries of jumping, i bought a second hand ECU reprogrammed it and everything went well.
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Old May 15, 2024 | 10:44 AM
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Interesting. You are quite lucky. How did you "reprogram" it?
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Old May 16, 2024 | 04:28 AM
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Originally Posted by JettaRed
Interesting. You are quite lucky. How did you "reprogram" it?
There's a shop for that here, i think they're doing cloning or something.
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Old May 16, 2024 | 07:47 AM
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Glad it's fixed, but I don't know how you cloned fried electronics. Maybe the non-volatile memory was intact, or maybe they just removed and transferred the PROM to the "new" ECU.
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Old May 16, 2024 | 08:44 AM
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How were you jump starting the car, were you connecting to the jump points in the engine bay? Where you using a jumper pack or using jumper cables hooked to another car? I hardly every jump start cars so thankfully my jumper cables and my jumper pack has clear instructions on them on which order to connect them or I'd probably get it wrong trying to remember.




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