SAM unit replacement question
Thread Starter
Newbie
Joined: Nov 2018
Posts: 2
Likes: 0
C240
SAM unit replacement question
My blinkers, emergency blinkers, gas gauge, wipers, seat controls, rear window privacy screen, FOB buttons, etc doesn't work any longer.
I made the mistake of changing out my battery for a new one and this occurred. After reading several forums, almost every one is saying that the SAM unit on the rear passenger side needs to be replaced.
Can I just buy a new one from eBay or an online parts store and easily swap it out for the defective one? Or do I have to send my original defaulted one to have it reprogrammed? I have an '01 C240 with 85K miles
I made the mistake of changing out my battery for a new one and this occurred. After reading several forums, almost every one is saying that the SAM unit on the rear passenger side needs to be replaced.
Can I just buy a new one from eBay or an online parts store and easily swap it out for the defective one? Or do I have to send my original defaulted one to have it reprogrammed? I have an '01 C240 with 85K miles
MBWorld Fanatic!
Joined: Feb 2006
Posts: 1,489
Likes: 110
From: WNY
2005 w203 C230
Sorry to read that...
There have been reports of swapping being successful when getting the same options.
i.e. Your donor needs to be the same part number and have the same options/packages you have. In your particular case - rear roller blind.
Ask the seller for VIN if possible from donor for you to cross reference.
Good luck.
There have been reports of swapping being successful when getting the same options.
i.e. Your donor needs to be the same part number and have the same options/packages you have. In your particular case - rear roller blind.
Ask the seller for VIN if possible from donor for you to cross reference.
Good luck.
Senior Member
Joined: Apr 2009
Posts: 321
Likes: 49
w203cl
I think the dealership can reprogram it also.
These should be the fitting numbers, from old to newer, but no warranty.
A0025459701
A2095450101
A2095450701
A2035453201
A2035453801
A2035453401
A2035454701
If you wait 5 minutes, not touching the car before changing the battery, you should have no problems. The can bus devices must go into sleep before disconnecting the battery, so open hood, wait 5 minutes not touching anything and disconnect.
These should be the fitting numbers, from old to newer, but no warranty.
A0025459701
A2095450101
A2095450701
A2035453201
A2035453801
A2035453401
A2035454701
If you wait 5 minutes, not touching the car before changing the battery, you should have no problems. The can bus devices must go into sleep before disconnecting the battery, so open hood, wait 5 minutes not touching anything and disconnect.
Last edited by 112233; Nov 16, 2018 at 03:47 PM.
Thread Starter
Newbie
Joined: Nov 2018
Posts: 2
Likes: 0
C240
Sorry to read that...
There have been reports of swapping being successful when getting the same options.
i.e. Your donor needs to be the same part number and have the same options/packages you have. In your particular case - rear roller blind.
Ask the seller for VIN if possible from donor for you to cross reference.
Good luck.
There have been reports of swapping being successful when getting the same options.
i.e. Your donor needs to be the same part number and have the same options/packages you have. In your particular case - rear roller blind.
Ask the seller for VIN if possible from donor for you to cross reference.
Good luck.
Wow thank you so much for this info!! I will keep this in mind and make sure to ask the seller for VIN if I decide to buy a separate unit from a different Benz (with same options/packages per your reply) and swap!! again, thank you so much! I really hope I can get this figured out before driving across country!!
Senior Member
Joined: Jul 2011
Posts: 408
Likes: 41
From: Hawaii
2017 GLA 250, 2011 C63 P31 (p30 w/ lsd) (in repair), 2005 C230 Sport Eurocharged, 2003 C320~sold
fyi anyone with STAR DAS/XENTRY can reprogram any options you are missing or remove extra ones you may not have (typically any "extras" won't hurt)
