Description
What this service does
The M646 4-cylinder CDI engine ECU is commonly fitted to the W639 Vito and W906 Sprinter. It typically fails to a no-crank, and loses communication with the other modules and the diagnostic tool when it’s faulting. We repair your own unit, rectify all the known faults, and fit higher-rated parts to keep it reliable. Because it’s your original ECU it goes straight back in plug-and-play – no coding, no programming, no immobiliser sync.
Common symptoms
– No crank cold
– No communication with the engine ECU
– Won’t crank when hot
– Engine fan runs at full speed as soon as the ignition is on
Common fault codes
No communication with the ECU.
Fits these part numbers
A6469002700, A6469002000, A6469006600, A6111533679, A6111536179, A6111534979, A6111535079, A6111535379, A6111535579, A6111535679, A6461502072, A6461503734, A6461506372, A6461506172, A6461500977, A6461500678, A6469002900
How it works
1. Buy this service. We email you shipping instructions.
2. Post us your ECU with your VIN and a note of the symptoms. Don’t clear the fault codes first – if they’ve already been cleared, write down what was logged.
3. We repair and test it.
4. We post it back, ready to refit – plug-and-play, no coding.
Turnaround: a few business days plus return post. Warranty: 12 months unlimited km. Workshops (ABN): trade pricing on application.
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