E-Klasse

Good information site

How can I tell if my E-Class has Can-bus?

Different Comand part numbers:
A210 820 4889 no Can-Bus
A210 820 5489 with Can-Bus
A210 820 5689 with Can-Bus and 'Speller'
A210 820 5189 with Can-Bus (US-Model)
A208 820 4089 is from a CLK W208 with CAN-Bus (like A210 820 5489)
A163 820 XXXX is from a M-class with no Can

E320

Only 00'-up e class has can bus if you have the earlier models you need to buy a non can bus comand.I did this upgrade on my e class you also need to buy a new panel.

MBenzNL

Not completely true...every single W210 has CANBUS and even all 202s from mid 95 up have CANBUS (and thus are suiteable for the MF steering wheel & cluster upgrade) but as far as CANBUS at the redaio goes:

A 210/208 with a steering wheel with the controlbuttons has CANBUS at the radio, the ones with a steering wheel without these controls does not have CANBUS at the radio.

If you have a W210 or W208 without the MF steering wheel, please be advised that the illumination in the non CANBUS 210 and 208 numbered comands will not work...unless you reconnect the illumination differently by soldering a wire inside the comand.

The 163 comands (please note that euro comands are different then US MCS units) do have an illuminatuin feature that is compateable with the non MF steering wheel 208/210s...but has a gyroscope that is 5 degrees off in the 208 (it has the same angle as in teh 210 though).

greetingz,

E320

Ok you win but do you mind sharing where's the location of the canbus,

apl175

The CANBUS does not have a location; it is ubiquitous.

CAN refers to a standard for the passing of information over a bidirectional electrical bus in motor vehicles. Think of it as an Ethernet network inside your car, connecting all of the control modules together. CAN devices transmit and receive data in a similar fashion to Ethernet - using packet data collision sense with arbitration. The CAN standard refers to two bus speeds - a 1Mbps speed, and a 83-500 kb/s speed. The latter slower speed is what is used on most recent production MB (and other makes) of automobiles.
The cable used is also similar - two twisted pairs for redundancy. There's also Quality of Service with some data messages having higher priority over others - for example "ignition timing advance" data messages have higher priority over "wheel speed/ABS" messages, which all have higher priority over "current ambient temp" messages.
There are a surprising number of devices ab out the W210 that transmit and receive CAN messages. Everything from engine control modules, to wipers, to window switches.
It is this combined approach which facilitates the connection of most devices together that make a CAN bus so useful.

For example, the act of opening a door in a W210 generates this kind of chatter on the CAN bus:

"Front dome lamp :
The left/right front door switches (S17/3, S17/4) conduct a ground
signal to the PSE control module (A37). In turn, the PSE control module (A37) sends a CAN message "Door open" to the roof control panel control module (N70)."

PSE = Pneumatic Systems Equipment, the PSE module which supplies, amongst other things, pneumatic services to various actuators on board is also one of the locations where a lot of timing and relay electronics are integrated.


Hope this helps (I cut and pasted from another message I sent)

E-Klasse

Question:

If you switch out the instrument cluster on a 96 - 99 W210 with one from a 2000+ model, do you have to symulate or produce a CANBUS signal to set the time and switch the center display screen?

scorchie

You can do that if the instrument cluster is programmed to have a COMAND present. Then the time is set via CANBUS from the COMAND... no other input is allowed to change the time.

If the instrument cluster is not version coded for COMAND, then the way to change the time/date is via the steering wheel controls (which by themselves are NOT on CANBUS, i.e. they are not connected directly to the CANBUS).

-s-

E-Klasse

So what input do the buttons on the steering wheel have then to the instrument cluster?

scorchie

Direct wire.

-s-

E-Klasse

I do not have an owners manual for a 2000+ E-Class with a multifuntion steering wheel. What is the operation of each button to set the time and change the display pages?

Thank You

scorchie

You should just go to a dealership and look at any new car... the buttons are the same. I would explain it but it is kind of involved and it's easier to see it... plus it's late and I'm tired!

-s-

E-Klasse

More good info (Go Here)

E-Klasse

The 96 to 99 cluster connector that plugs in to the left socket as seen from the back has openings for a few more wires. The 2000+ connector has blue, yellow, and black wires added in these positions. They are the same as the wires on the contact ring in the steering column on a 2000+ multifuntion wheel. Will connecting these wires make the buttons on the wheel work with a 2000+ instrument cluster?