WHAT THE CCF CONTROLS
- —Rolling radius and wheel size logic that speedometers and drivetrains rely on.
- —Lighting behaviour: DRLs, signature lights, follow-me-home and hazard logic.
- —Seat, mirror and convenience settings, plus market-specific behaviours.
WHEN IT NEEDS ATTENTION
- —After wheel or tyre-size changes that upset the rolling-radius calculation.
- —When retrofit hardware behaves erratically because the car does not know it exists.
- —On imported vehicles carrying the configuration of another market.
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