Sam unit

[Churchj]

General question
05 vito . Same unit broken
Can I I just plug and play with another or will it need recoding??
Thanks

 

[jonnyboy82]

General question
05 vito . Same unit broken
Can I I just plug and play with another or will it need recoding??
Thanks

Pretty sure it will need coding.


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[Churchj]

Cheers
Would it still need recoding if it was off same spec

 

[m80]

Definitely plug and play,
be sure the numbers match or it won't be recognised.

I've changed a few of these on anything as late a 09 Vito / Viano.
I've a spare with known issues that would be good for diagnosis, happy to send for postage cost. if the numbers match.

A replacement can be sourced off eBay from around £85 up to a little over £100.

Available (for post cost) Vito / Viano 639 SAM (for diagnosis only) | MBClub UK - Bringing together Mercedes Enthusiasts

 

[Churchj]

Thanks my vito problem is
No horn no wipers or washers no indercators or reverse lights battery light on but charging 14v
Lights on but no headlights.
I had computer put on it and said it couldn't communicate with the sam unit

 

[m80]

If you remove the SAM there is a number that will be comparable to my unit I've linked to. Very possibly the same number.
You should really disconnect the battery, The unit is below the fuse tray, in the fuse box, under the bonnet.
After you have disconnected all the plugs into the fuse tray, and removed a couple or three torx screws the SAM comes out with the fuse tray.
The 2 wire plug into the SAM, underneath the fuse tray is easy to break, it feeds the cooling fan.

Identifying the number on the SAM is first task.
If mine is the samre you're welcome to it to prove yours is totally shot, as it sounds like it is.
While in the fuse box you may find water ingress to be the cause.