Mercedes w203 no starting signal....

[i_shot_the_sheriff]

Dear DK,

I got a Mercedes W203.045 C200 Compressor.
This car was abandoned for 4 months, one day the customer started the engine,, everything looked fine,,, he drove it for a while all ok! The next day when he tried to start it again, it wouldn't start!
The key is tuning the EZS,,, the ELV is also unlocking but when you turn the key to start the engine it's completly dead! :beheaded:

I have done a star scan, i had no faults in EZS, both SAM and in the engine ecu!!! I got only faults in the sunroof and the steering wheel sensor needs calibration (irrelevant!)!

If i give 12V+ to the purple wire (starter) on the front SAM the car is cranking but not starting!

Does anyone has any idea on what is this problem??


P.S. There is one thing that i noted and was strange....
In the EZS module,, on the live data,,,, it says:
EZS permitted to start -> YES
ELV permitted to start -> YES
ME, ECU electronics, Permitted to Start -> NO

Isn't that supposed to be a YES???

Also when i try to program the permission status in the Engine ecu i get the error saying "Fault in Software Communication"


Thanks in advance

[mercis]

check actual value "DAS" on eis
if you give 12v to purple wire,turn key to 50

[i_shot_the_sheriff]

The DAS values on EIS seem OK except the "ME, ECU electronics, Permitted to Start -> NO
"


All the other ok,,, Key number 1 in ignition, ELV permitted to start OK, EIS too,,,,,

Also, i have just tried what you suggested (key in 50 when i give 12v) but it won't start again

[mercis]

if you hardware ok
renew and coding ecu
front sam and fuse ,relay ok?

[i_shot_the_sheriff]

From the front SAM every fuse is ok! Also i have tried another starter relay but still the same result....

Renew ecu?? Can star do this?? Sorry i'm not really expirienced with Mercedes Star Diagnostic :/

[mercis]

if all hw okay,can only sw

[i_shot_the_sheriff]

I got that,
So i have to go to the "coding" menu in star and perform it with the same numbers?

[mercis]

yes,you can this coding use

[i_shot_the_sheriff]

I have tried the coding but still the same!
Also, in the adaptions menu in the ME when i try to access the "program the DAS" option i get an error saying "Software communication problem"!!

[smayer]

You have a CAN problem, check CAN connectors in front left pilar.
maybe this help http://img198.imageshack.us/img198/315/canbus.jpg

[i_shot_the_sheriff]

Is this located in the cabin?

[wsc]

Yes m8
The guy said " front left pilar "
Regards
WSC

[i_shot_the_sheriff]

Hey,

I have checked this connector, it seems good, no "damage" and everything is connected good

[omglol]

Hi!

I have completely same problem. The car is W203, make year 2006, 220CDI.

Was running normally, then one day just would't start. When you turn the key, nothing happens. Starter is OK (we tried putting direct voltage to starter - it starts cranking, but the engine won't fire).

I have no fault codes, but DAS cannot establish communication with CGW. In EZS under "Drive authorization", there is state "891: ME Motor Electronics: start enable: NO - actual value. If you press information, it says engine does not see that ignition is ON. What could be the problem?

[mercis]

can you on eis actual value 50 see?

[omglol]

When I go to guided diagnostics and I turn the key to "START" and hold it for a few seconds, it does see it, yes.

Also - where are these damn CAN connectors? I can't seem to find them in front left pillar? Where exactly? Top of the pillar, bottom?

[i_shot_the_sheriff]

Yes! Actual value 50 is ok when i turn the key! It says activated

[i_shot_the_sheriff]

I found them on the bottom of the left pillar... You have to take out the plastics

[omglol]

Thanks, I found them too ... they seem to be OK, but how do you disconnect each one of them? I can't seem to find a way.

[omglol]

There are 2 connectors ... in the front is CAN-bus C connector with green wires, on the rear CAN-bus B connector with brown wires ... however, they all seem OK to me.

[omglol]

Can anyone point me in which location is Central Gateway?

[i_shot_the_sheriff]

Where does the starter gets the signal? Front sam?

[whiskymk]

Disconect dashboard and try to start engine

[thumthums]

you never mentioned if you try another ignition key.

Sometimes starting issues are just faulty key. I recommend try second key before going to crazy house. :argh:

[omglol]

Disconect dashboard and try to start engine

I tried this, no change at all.

[whiskymk]

you never mentioned if you try another ignition key.

Sometimes starting issues are just faulty key. I recommend try second key before going to crazy house. :argh:
its true .. but maibe some of unit block CAN ,, or simply EZS no good

[omglol]

OK, I have some news.

I found out that there are two signals "50" in EZS. First is "circuit 50", second "terminal 50 (CAN). When I switch ignition key from position II (ignition ON) to position III (start request), both of these signals go from "NO" to "YES", but only for the first time since ignition is ON. If I return key from position III (start request) to position II (ignition ON) and then again try to start the car (turn the key to position III), only "circuit 50" signal turns to "YES", while signal "terminal 50 (CAN)" remains as "NO". I have to take out the key and insert it again to get a new "try".

Now to Engine ECU. The signal here has name "Terminal 50 (input)" and behaves exactly like signal "terminal 50 (CAN)" in EZS. It only turns to "YES" when you move ignition key from position II to position III, but ONLY for the first time since ignition is ON. However, the starter still won't crank.

There is a way to get the engine running. One guy has to go in the vehicle, insert the key, turn it to position III (start request) and hold it in this position. The other guy has to put direct power on starter and the engine starts running ...

My question for MB experts: Why does the signal "terminal 50 (CAN)" get from "NO" to "YES" only for the first time since ignition is ON?

[russrace]

its designed that way, to prevent you from engaging the starter once the engine has started.

You need to look for your problem at the front sam, the engine controller must bring the relay in, you say you have checked all the fuses but you may have fuses missing too..

also its normal for start enable to be no on ME it will go to yes once the car starts.

also does ME see that the car is in park or neutral?

[omglol]

The relay does get ON, but it does not transfer the power to the starter. Front SAM is the one under the hood which has this relay?

[omglol]

Damn, fuse #52 in front SAM was blown ... missed it in the first check. Car now starts fine, but I will still remove starter and have a look at it to figure out why the fuse was blown.

[agabna]

Hi!

I have completely same problem. The car is W203, make year 2006, 220CDI.

Was running normally, then one day just would't start. When you turn the key, nothing happens. Starter is OK (we tried putting direct voltage to starter - it starts cranking, but the engine won't fire).

I have no fault codes, but DAS cannot establish communication with CGW. In EZS under "Drive authorization", there is state "891: ME Motor Electronics: start enable: NO - actual value. If you press information, it says engine does not see that ignition is ON. What could be the problem?

hello
i think your problem is not like the above because it common problem in cdi ecu

you have to post the ecu dump ic 95p08
you need to code the ecu again

[omglol]

Problem already solved, it was fuse #52 in front SAM.

[zoyzoyni]

first of all "your problem is 95% can from ezs.and 5% from ecuengine.faster way to be sure is-to found full set ecu- ezs and key and to test can.or only the ecu.car will not start but will give you full diagnosis.same with used ezs and key.so after you act for repair.

[whiskymk]

OOOOO Omglol
I think u look good

[i_shot_the_sheriff]

My #52 fuse is good!! Damn i think i'm gonna start searching for that kit,,,,,,, any other ideas?

[jackeldestripador]

Sorry for asking in this place maybe someone has this problem. Same as above, im having some issue with some W204.004 when i make it crank (position III in ezs) the engine keeps cranking and all lights on dash turn off. I have been tested other battery and do the same. Tested with other battery only for crank motor and original battery to the rest of the vehicle and turn to start engine and all works ok, so i think that is some + voltage drop or some ground poor connection but i can't found it. Somebody has experience with this trouble?

Thanks!

[tonicar]

dear,check the can bus wires if it cuts under the foot on the left driver maybe their color green and white , second maybe ur ecu is fault or damage.

[deondti]

I have the same problem.
additional information....
in EIS Terminal 50 goes "on" when you go to crank position
terminal 50 (CAN) stays off

[immokill]

It is old post but I have same problem , no 50 CAN from ezs.

[immokill]

I have the same problem.
additional information....
in EIS Terminal 50 goes "on" when you go to crank position
terminal 50 (CAN) stays off

Hi did you solved it m8?

[i_shot_the_sheriff]

Problem in my case was ecu!!

I've managed to rebail the BGA mcu and make it work! But it worked for 1 week and then broke again (Maybe i haven't followed every step in the rebail process!)
Anyway,, took another ecu , swapped whole data (cpu+eprom+flash) and it worked like a charm!

[aqua_life]

Hello,
I have similar problem in W203 c220 cdi manual gearbox.
I don´t have errors in engine ECU and EIS.
However Drive autorizathion is NO.
Starter motor does not turn. However if I hold the key in starter position and shunt the starter relay the engine starts, no problem. I can drive without problems until I stop the engine...
I already made a new Key, same result. Changed EIS, same. Changed engine ECU, same. Changed front SAM, same.
Checked and cleaned all CAN connectors on pillar, same result.
Fuses and relays are good.
I think maybe engine ECU software is not good.
Engine ECU is a 0281010348.
Inside is eeprom 95p08.
Attached I send original eeprom from original ECU and also eeprom from used ECU I bought to replace.
Can anyone check these files to see if they are ok ?

Thanks for your help.

[aqua_life]

Problem solved. I put ECU virgin, programmed with Star and its good.