With the car safely parked, check the radar area for snow, dirt or an object obstructing it. Use the cleaning and restart guidance in the handbook. If ACC remains unavailable, record the exact message, any other warnings and the circumstances when it appears.
A diagnostic scan is the next step for a persistent fault. It needs to be considered alongside the repair history and physical checks, rather than treated as proof that the radar needs aiming. A diagnostic scan, when your job needs one, is priced and itemised separately.
- A calibration requirement is confirmed. Front radar calibration at a centre is £162 inc VAT (£135 +VAT). If a windscreen camera needs calibration, that is its own service at £162 inc VAT (£135 +VAT). The fitted system and repair determine which procedure is needed.
- Another fault is found. Wiring, configuration, a restricted sensor view or a fault elsewhere in the car may need attention before ACC can be reassessed. A calibration does not replace that work.
- A replacement radar needs setting up. Coding after radar replacement is £232.80 inc VAT (£194 +VAT). Calibration is priced separately: its standard centre rate is £162 inc VAT (£135 +VAT), before any applicable multi-system discount. Ask for both required lines in the written quote; the coding price alone is not the total.
Keep the calibration result with your repair records. Your quote is confirmed in writing before anything is booked. Read VW Front Assist not available when the collision warning appears alongside ACC, or the ADAS calibration guide for the workshop process.