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2010 s550 w221 programming issue

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Old Jul 30, 2019 | 03:54 AM
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2010 Mercedes s550
2010 s550 w221 programming issue
Hello I’m new here, a mobile key guy came to make me an extra key and messed up the coding on the car, now the lights and signals don’t work a whole bunch of lights are on the dash and the gauges don’t work, I brought a friend of a friend that used to work for Mercedes come out and he told me that it won’t let him enter the modules and it shows it’s in theft mode (but the car runs and drives), any help would be appreciated before I spend an arm and a leg at the dealership thank you all in advance
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Old Jul 30, 2019 | 06:43 AM
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Hi and welcome to MBworld!

Good luck troubleshooting your car! Moving to W221, thanks.

Bob
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Old Jul 31, 2019 | 04:29 AM
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W221 S600, W220 S55 AMG Kompressor, W124 300E, W140 S320, W210 E3204M W164 ML320 Bluetec
Originally Posted by naderk08
Hello I’m new here, a mobile key guy came to make me an extra key and messed up the coding on the car, now the lights and signals don’t work a whole bunch of lights are on the dash and the gauges don’t work, I brought a friend of a friend that used to work for Mercedes come out and he told me that it won’t let him enter the modules and it shows it’s in theft mode (but the car runs and drives), any help would be appreciated before I spend an arm and a leg at the dealership thank you all in advance
That does not make sense to me. Was the EIS removed when the friend made the key? If the Immobilizer was tripped, it would or start. And you could still communicate with the control units.
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Old Jul 31, 2019 | 04:42 AM
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2010 Mercedes s550
Originally Posted by Polar Bear
That does not make sense to me. Was the EIS removed when the friend made the key? If the Immobilizer was tripped, it would or start. And you could still communicate with the control units.
No this was done all obd I was watching him, he said he had an error and that’s when everything went haywire
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Old Jul 31, 2019 | 04:49 AM
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W221 S600, W220 S55 AMG Kompressor, W124 300E, W140 S320, W210 E3204M W164 ML320 Bluetec
Originally Posted by naderk08
No this was done all obd I was watching him, he said he had an error and that’s when everything went haywire
Did he tap into other wiring in the vehicle or disconnect the ESL (electronic steering lock)? I assume an IR key was used to extract the EIS password?
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Old Jul 31, 2019 | 12:54 PM
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2010 Mercedes s550
Originally Posted by Polar Bear
Did he tap into other wiring in the vehicle or disconnect the ESL (electronic steering lock)? I assume an IR key was used to extract the EIS password?
Not sure but I was told the Sam coding is bad or the central gateway is bad I just don’t know how to go about it
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Old Aug 2, 2019 | 11:27 AM
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W221 S600, W220 S55 AMG Kompressor, W124 300E, W140 S320, W210 E3204M W164 ML320 Bluetec
Originally Posted by naderk08
Not sure but I was told the Sam coding is bad or the central gateway is bad I just don’t know how to go about it
All you would need to do is simply have them
both SCN coded and it will put them in their factory state.
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Old Aug 2, 2019 | 11:49 AM
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2010 Mercedes s550
Originally Posted by Polar Bear
All you would need to do is simply have them
both SCN coded and it will put them in their factory state.
Thank you, I hope your right about the simple part, is the dealership the only place that can do it?
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Old Aug 3, 2019 | 03:48 AM
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Originally Posted by naderk08
Thank you, I hope your right about the simple part, is the dealership the only place that can do it?
I can but if you're far, then dealership, they might want to replace stuff just tell them you need a SCN or module update nothing more....
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Old Aug 3, 2019 | 11:19 AM
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2010 Mercedes s550
Originally Posted by antiguangenius
I can but if you're far, then dealership, they might want to replace stuff just tell them you need a SCN or module update nothing more....
Ok thank you yes I think your in the east coast I’m in California
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