Active Distance Assist DISTRONIC retrofit (factory code 239, “Distronic Pro” in the trade) for 2019+ cars delivered without it: your data card shows 258 and 440, and we replace them with 239.
What it does: full-speed-range radar adaptive cruise with follow-to-stop down to standstill and automatic restart (automatic gearbox only), distance display in the cluster and distance selection on the steering wheel.
Not a code-only job: the steering-wheel switch block is always replaced and, depending on equipment, a new front radar (C W205 facelift, GLC W253 facelift), an extra connector (GLE W167) or FlexRay wiring may be required. SCN-online coding and radar calibration included.
A (W177), B (W247), CLA (W118), GLB (X247), C (W205 facelift / W206), GLC (W253 facelift / X254), GLE (W167) — send us your VIN and we confirm before quoting.
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