Description

What this service does

The M271 turbocharged engine ECU in the W204 C-Class (C180/C200) commonly fails by throwing ignition-coil misfire codes that keep coming back even after the coils are replaced. It can also cause oxygen-sensor and “mixture too rich” faults. Another common one is a sudden no-start – this often leaves no fault code, but the drive-authority data won’t show a status in live data. 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 needed.

If yours has the drive-authority / no-start fault, we also need your ignition switch and at least one key sent in.

Common symptoms

– Misfire
– Won’t start
– Drive-authority data shows no status in live data / actual values
– Engine light on the dash

Common fault codes

P2300-P2310 (ignition coil 1-4, short circuit to ground or positive); P0172 (cylinder bank 1 mixture too rich); P2196 (oxygen sensor 1 stuck “rich”).

Fits these part numbers

A2711500391, A0034468840

How it works

1. Buy this service. We email you shipping instructions.
2. Post us your ECU – plus the ignition switch and one key if it’s the no-start/drive-authority fault – 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.