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Navigation: CAN > OEM CAN Protocols

Ford Focus RS/ST 2005 - 2012 (ME 9.0)

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OEM CAN protocol for the Ford Focus RS/ST/ST225225 and RS500 models, used in combination with our MaxxECU Race Ford Focus plugin.




Please select the proper OEM CAN protocol in the drop down list, Configuration --> CAN settings, OEM CAN Protocols.



Inputs (working)

Clutch depressed

Traction button

AC request

All four wheel speeds from ABS


Outputs (working)

Tachometer (RPM)

Check engine light

Turbo boost (0-1.8bar boost)

Oil pressure gauge

Oil temperature

Low oil level light <-- hardcoded to DIN4 input (used by the plugin).

Engine temperatures

Immobilizer light

Traction light



Shiftlight indication on some ST225 models, uses the current revlimiter value - 500rpm to trigger the light.



Not working/issues

ODBII diagnostics not available with MaxxECU connected, use stock ECU during diagnostics.

Fuel consumption



AC request update MTune 1.143.

Wheel speed correction function added in MTune 1.142.

MTune 1.136: AC request updated.

MTune 1.118: Ford Focus ST support added.

MTune 1.110: Smoother speedometer output in dash.

MTune 1.108: Initial support for this CAN protocol.


Confirmed to work models

2011 Ford Focus RS, Bosch 0261 209 484 PCM.

2011 Ford Focus ST, Bosch 0261 209 048 PCM.




Ford Focus RS instrument cluster



Ford Focus RS dashboard.


Arrow explanation

Green (light): Working.

Green (dark): Working (but not controlled by CAN).

Blue: Not ECU controlled.

Orange: Partly controlled by MaxxECU.

Yellow: Turned off.




The "oil pressure" signal in dashboard to the right is a "simulated" oil pressure signal (from RPM and oil temperature).

Check engine light is connected to MaxxECU error diagnostics.




Example of the instrument cluster during idle on the Ford Focus RS.



Wheel circumference must always be calibrated using an OEM CAN protocol


When we calibrate the wheel speeds from an OEM vehicle (to make an OEM CAN Protocol), we always use the stock wheel sizes, so to get correct wheel speeds within MaxxECU, you must calibrate your wheel dimensions, since they are used to show you the correct speed in MaxxECU.