W221 S550 facelift 2009 year. CAN BUS OFF
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Joined: May 2019
Posts: 25
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w221 S550 4 matic 2007/2011 year
W221 S550 facelift 2009 year. CAN BUS OFF
Hello, my 221 550 4 matic of 2009, facelift, works perfectly, accelerates perfectly, no errors.
Sometimes when I start the car it starts turning off various modules. it gets better by itself. The engine is running, everything on the dashboard starts to light up. I am attaching a diagnosis protocol and a clip of how the car behaves.
Video file :
https://mega.nz/file/21RQlZSC#AFku5x...oZ4xaprtqHEWiY
https://mega.nz/file/bk5UxBLS#wyxm8C...UYEQea4QsJ9aag
Sometimes when I start the car it starts turning off various modules. it gets better by itself. The engine is running, everything on the dashboard starts to light up. I am attaching a diagnosis protocol and a clip of how the car behaves.
Video file :
https://mega.nz/file/21RQlZSC#AFku5x...oZ4xaprtqHEWiY
https://mega.nz/file/bk5UxBLS#wyxm8C...UYEQea4QsJ9aag
Last edited by metodiev; Oct 26, 2022 at 09:16 AM.
Super Member
Joined: Dec 2018
Posts: 857
Likes: 501
From: Washington, DC
2007 S600, 2007 Chrysler 300 SRT8, 2000 C5 Corvette, 2017 Mustang GT, 2023 300C, and a 2019 Lincoln
The S Class is notoriously sensitive to low voltage. If your consumer battery is old and isn't storing a good charge, the car will selectively turn off various systems to preserve the voltage it has. When your alternator restores proper voltage, those systems previously turned off now return. Check your battery. If it is old, replace it.
Super Member
Joined: Dec 2018
Posts: 857
Likes: 501
From: Washington, DC
2007 S600, 2007 Chrysler 300 SRT8, 2000 C5 Corvette, 2017 Mustang GT, 2023 300C, and a 2019 Lincoln
I would clear the codes, take her for a ride, and see if any or all of the codes return. My take is all of these codes are related to low voltage. I know you said the battery was good, but how old is it? Check the battery for a date.
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Super Member
Joined: Dec 2018
Posts: 857
Likes: 501
From: Washington, DC
2007 S600, 2007 Chrysler 300 SRT8, 2000 C5 Corvette, 2017 Mustang GT, 2023 300C, and a 2019 Lincoln
Keep us posted. I would drive it daily for a week, let it sit overnight, check the voltage in the morning. If the resting voltage is not >12.0; I would think about a new battery. These cars are not happy with low voltage. After start and with engine running, voltage should be >14.0. There should be no codes.
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