HELP PLEASE
replaced eis. key in and turns. throttle body makes noise.
No mileagle on gauges and no crank.
i believe pin 2 on plug c is no voltage. i just need help finding the fuse that covers it
thabnk you




You need to use a $150 MB scanner to read module conditions from OBD2 connector.
Realise that parts can not be interchanged without coding them to your chassis.
Unfortunately i have a health issue that limits my ability to work at times so i cpouldnt pursue the matter yesterday




and turns in the igniton.
I get dash lights but no crank
and with my icarsoft mbv3.0 hooked up
[ it does not reads the vin.
I used my test light to check the voltage on plug c and found pin 2 to be 4 volts instead of 12.
I do know that is circuit 15.
Unfortunately i have a health issue that limits my ability to work at times so i cpouldnt pursue the matter yesterday
Does your scanner read data out of EIS ignition Key slot? Not just fault codes but PID values.
You want to make sure ignition security is not vetoing start authorization.
Last edited by CaliBenzDriver; May 23, 2025 at 05:19 PM.
What got replaced WITH the EIS? (ie, keys, ECU, TCM, etc)Or did you clone old info onto new?
What precipitated EIS swap? Obviously, if it was this same exact issue, we need to know.




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Provider of replacement EIS used different part Number EIS,
OEM 211 545 23 08
NEW 211 545 23 18
after i asked him not to.
HE SAID PART NUMBER MAY BE DIFFERENT BUT THE BOARD IS THE SAME. I DO THIS ALL THE TIME.
REPLACED OEM battery with H8 AGM bateery due to mine being dead.
This is what happens:
Lock/ unlock with remote.
Key in gets door xing and dummy lights.
turn key gets green light on emulator, all dash lichts anf throttle flaps zound off.
gauges are funtional except NO mileage.
Instead ut shows. ------------
I have iCARSOFT MBV 3.0
It powers up but wont read vin or con ect wkth ecu
Last edited by 06E350Merzzz; May 31, 2025 at 11:05 AM.
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Scanner should connect to chassis regardless of drive authorization pass/fail status - Chassis already partially powers up from keyfob, a good sign.
Your scanner staying mute... suggest a bad SAM fuse... or scanner is unable to read your particular chassis VIN. So go ahead, enter VIN manually to progress past that step. Scanner will enumarate active modules then you can interact with car network.
Last edited by CaliBenzDriver; May 31, 2025 at 08:34 PM.
Scanner should connect to chassis regardless of drive authorization pass/fail status - Chassis already partially powers up from keyfob, a good sign.
Your scanner staying mute... suggest a bad SAM fuse... or scanner is unable to read your particular chassis VIN. So go ahead, enter VIN manually to progress past that step. Scanner will enumarate active modules then you can interact with car network.
i cycle d the key off, restarted the i ceasoft, selected OBD, Device said it co I ld not link to vehicle




Bars on the instrument cluster odometer indicate a VIN mismatch in the modules. Was the replacement EIS programmed with your vehicle's VIN? Motor Electronics, steering column lock, Electronic Ignition Switch, and Instrument Cluster must have matching VIN number in the modules. If only the instrument cluster is mismatched, the vehicle will start and run but the odometer shows bars to indicate it is not programmed to the vehicle. A VIN mismatch in the other three modules will prevent a start authorization. You need a diagnostic tool that shows the status of start authorization.
@CaliBenzDriver see attachment for some good tech info on the various drive authorization systems.




Bars on the instrument cluster odometer indicate a VIN mismatch in the modules. Was the replacement EIS programmed with your vehicle's VIN? Motor Electronics, steering column lock, Electronic Ignition Switch, and Instrument Cluster must have matching VIN number in the modules. If only the instrument cluster is mismatched, the vehicle will start and run but the odometer shows bars to indicate it is not programmed to the vehicle. A VIN mismatch in the other three modules will prevent a start authorization. You need a diagnostic tool that shows the status of start authorization.
@CaliBenzDriver see attachment for some good tech info on the various drive authorization systems.
what steps do you think OP should take?
I find it odd scanner fails to connect... does iCarsoft V3 know to support this model year??
Scanner gets stuck on TCU not answering network: SAM does not enable IGN power ON du to DAS failing VIN

TCU needs IGN:ON (ENG:OFF) to get powered up.
Last edited by CaliBenzDriver; Jun 1, 2025 at 02:17 PM.




-OBD2 Breakout box. Check all pins of the OBD2 connector using the breakout box.
-Verify CANBUS voltages using the breakout box.
-Verify CANBUS voltages at the CANBUS-C connector on the driver's side frame rail.
-Connect CANBUS Analyzer to the CANBUS; first in the breakout box, then in the CANBUS-C connector for the motor electronics. See link below. It was a TCU module killing the CANBUS start signal.
-Attempt a different diagnostic system and verify latest software. On my C4 system, I had outdated drivers; updating them corrected the connectivity issue that was driving me nuts.

I agree with Cali that the issue is likely a networking issue. Following the above will confirm if it is a network or electrical (broken or shorted wire or integrated circuit chip) issue.
See this:
https://mbworld.org/forums/w211-amg/...-no-start.html
Query: Was the EIS programmed to your car or was it just "Trust me"? FWIW, if you are installing a virginized Motor Electronics Module (ME), you must use STAR/Xentry to "marry" the module to the car. Might be the same for the EIS but I cannot say for sure as I have never installed a replacement EIS; only a replacement ME module.
Download WIS schematics here:
https://charm.li/Mercedes%20Benz/
I recommend downloading and installing an aftermarket downloader. Windows11 choked at 1.0GB on my computer and the W211 file I needed was 1.21GB. Took me two or three attempts to figure out it was Microsoft bending me over again...
Please let us know the solution for future owners.
Last edited by bbirdwell; Jun 1, 2025 at 09:29 PM.



