Our teams have dealt with a non-start situation with on many Mercedes commercial vehicles.
The main cause of the START ERROR being displayed on the dash is due to corruption of data in 2 of the vehicles main units,
one is the Temic immobilizer box also known as the WSP and the Main Engine control unit.
We recommend trying a few things before going deeep, seen🤔?
Test vehicle’s battery to be in a good state
Try a different key
Try the original key on its own with no other keys surrounding the ignition
If you have done this and you still have the START ERROR message there could be a number of issues,
we recommend having a deep diagnosis to pinpoint where the fault lies.
Common Faults leading to START ERROR on with certain Mercedes Benz:
Jump starting
Battery power not sufficient
The transponder in your key is faulty or missing
Antena coil on ignition faulty
ECU fault
Fuel pump fault
We also recommend testing for power on your WSP plug.
Pin 3 is continuous +12V direct from the battery, Red/Yellow Wire
Pin 7 is ignition +12V when your key is in position 1 and 2, Black /Yellow Wire
If there is no power on either you will get START ERROR on the dash.
If all seems correct, but still sh*t, download thee and so as below in this video
CLICK TO DOWNLOAD
👇👇
HERE
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(compatible to with all platforms)
May be whatever is causing You believe MUST do some nonsense to the vehicle, is some minor external problem with the sensors or actuators🤷♂️!
So, this ujanja is how to check, verify all the control electronics in the vehicle, are in proper order!
click here
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IMMO OFF files 
☝☝
click
These files to disable immobilizer system so the ecu accepts any random key used!
HAPA UJANJAtu, hii ndio jinsi ya kugundua, kupata na kupima componets za ECU, kisha suluhisha shida hiyo. inshaAllah👇
ECU cloning, duplicating or switching memory data’s,
flash memory data, EEPROM memory data, jogolize data,
HAPA UJANJA tu!
WinOLS ni programu yenye uchawi wa kuwezesha kubadilisha, kurekebisha data iliyomo kwenye ECU.
Ina maana unaeza kutoa/kuzima hizo mifumo zenye usumbufu kwenye gari, zikiwemo IMMOBILISER (kufanya immo off). kutoa DPF, EGR, ADblue, kubadili TURBO zenye umeme, yaaani inafanya kazi nyingi kama ECU tuning, uamuzi ni wako tu🤷♂️!
Click HERE
Ujanja wa EEPROM work ni muhimu, ukitaka kumbuka niaje,
…bonyeza HAPA UJANJA tu
