Tony MYMB

Hello Please help i going to install a module but need to know what happens if you disconnect both batteries simultaneously

what will I lose

IE radio code required / etc.....

Thanks T

KEY08

What radio code? Your clock may need to be reset. Maybe a reset of your windows and sunroof. That should be it.

Tony MYMB

Thanks thats easy then I want sure if you needed a radio code

PS Nice motor

KEY08

I believe if you yank the Comand unit out and try to install it in any other MB it will not work. That’s all I know about the unit being coded and branded to each vehicle. There is no start-up code when depowered like other car brands.

kajtek1

Clocks reset from GPS or cellphone. Not sure exactly.
W212, unlike older brothers does remember all settings. Even my garage & gate code.
For last 20 years MB doesn't install radios on American models.
They install command centers., who I believe need SD to pair with the car, but nothing to reset when power is disconnected.

pierrejoliat

My 1993 500S required a radio code to turn it on after a battery disconnect, I believe my 1991 190E did as well.
My 2003 S500 did not.

Sunnyslope48

You asked disconnecting both batteries because you wanted to 'install a module' . Does the module you want to install require both batteries to be disconnected? Does the module have live power to it with the engine/ignition shut off?

DFWdude

In any event, I would not disconnect both batteries simultaneously, not that you can at exactly the same time. I would need really freaky LONG arms to disconnect a battery in the engine bay and in the trunk at exactly the same time.

Sequentially would be a more accurate term.

Depending what "module" you are installing, I would disconnect only the battery most likely to power it, not both... unless a trained auto electrician tells you to disconnect both.

Tony MYMB

(Sequentially would be a more accurate term). This is correct DFW Dude ;-)

The module I have installed today is a X car-style Module all went well and is working as it should small problem with the insulation displacement crimps (they are junk) so soldered connections for the power and ground
my mod list:

1, New center caps
2, Install Mercedes laser projectors
3, Install led grill star
4, Convert all interior bulbs to led
5, Door open leds
6, Change door mirrors to sequential led turn signals
7, Rewire for door open mirror sequence (door mirror) (powered from SAM module)
8, Install audio high level converter for amp in boot (install amp)
9, Install diamond amg grill & re-install led star convert led star to RF controlled
10, Install led grill logo
11, Chane reverse lights to high power led
12, Install x car-style roof module
Install moving sills custom made to order (in transit)

Thanks for the info guys

KEY08

Picks or it didn’t happen. 😁

kajtek1

x2

Tony MYMB

2nd try here

https://photos.app.*******/udc1ee6qmNdERR1F6

Tony MYMB

link in next post

Tony MYMB

How do you post links to google photo album

last go https://photos.google.com/share/AF1Q...hiUlBiVkdoWHh3

KEY08

Link worked for me. Great stuff! I love that grill

pierrejoliat

Wow, what a difference, nice work!