Audi ADAS Calibration. From £162 Per System.

Pre Sense Front is Audi's badging for the collision-avoidance side of the assistance suite. It uses the front radar and forward camera to read the road, and when the dashboard flags Pre Sense Front (or Audi Pre Sense Fault), one or both of those sensors has lost aim or lost calibration.

The common triggers on the A4 (B9) are bumper repair, windscreen swap and any front-end work that touched the radar zone. Pre Sense Rear shares the same family name but covers rear-end protection. Pre Sense Basic handles the seat-belt pretensioner. They share the diagnostic chain but flag separately. A calibration, when one is needed, is £162 inc VAT (£135 +VAT) per system. Our Pre Sense fault coverage walks through which variant means what and what the fix costs.

Because they share the front sensor pair. The A6 (C8) runs Adaptive Cruise Assist, Active Lane Assist and Pre Sense Front off the same forward radar and the same windscreen-mounted camera. When either drifts out of aim, all three read the road wrong and shut down together, so the dashboard fills with faults from what was a single knock.

The cluster usually needs less work than it suggests. Calibration re-aims the sensor that moved, and every system reading through it comes back at once. If only the radar has shifted, that's one system at £162 inc VAT (£135 +VAT). If the camera needs re-aiming as well, that's a second system in the same visit, charged at 35% off at a centre.

Usually component protection. Audi routes new control modules, the ACC radar among them, through a security layer that leaves the part locked until it's married to the car, so a correctly fitted radar can still show ACC Not Available on the Q5 (FY). Bolting the part on is only half the job.

The rate card has a line for exactly this: front radar calibration following replacement, £232.80 inc VAT (£194 +VAT) at a centre, covering the coding a replacement module needs as well as the static aim to Audi's documented procedure. Tell us the radar was replaced when you enquire, and whether it was new or second-hand; a second-hand unit can be attempted, but coding one successfully is never guaranteed, and the centre confirms the scope with you before you book.

Dealer quotes customers have shown us for ADAS work run £300 to £900. Most of those figures were put together only after the car had been in for an inspection, with diagnostic time on the bill before any calibration ran, and none of them came from a published rate the owner could check in advance. Behind both numbers sits the same documented Audi calibration procedure.

Front camera calibration is £162 inc VAT (£135 +VAT), front radar is the same, with the full rate card on this page. Two or more systems in one visit: the highest-priced system is full price and each additional system is 35% off at a centre. Certificate to manufacturer tolerances, the same standard dealers issue.

Often not. On the A8 (D5), an 'adaptive cruise control currently unavailable' message can follow a flat battery, a battery replacement or a steering sensor fault, none of which damage the radar. The radar itself is fine; the system has flagged its aim as unconfirmed and shuts ACC down until a calibration verifies it, and clearing codes won't talk it out of that.

In that case the job is a front radar calibration with no part swap: confirm the radar reads correctly, run the static aim, clear the fault. A radar that took a physical hit, or a bent bracket behind the bumper, is different; the hardware has to be sound and correctly seated before any centre will calibrate it. Send the registration and what set the warning off. Your quote is confirmed in writing before anything is booked.

Yes, plan for it. On most ADAS-equipped Audis the forward camera mounts to the windscreen itself, so a replacement moves the camera with the glass and the old aim no longer holds. Some glass fitters arrange the calibration, many stop at the glass, and that gap is where Pre Sense and Lane Assist warnings come from days after the screen went in.

The warning isn't guaranteed to appear straight away either. The camera can sit out of aim while the dash stays quiet, which is why the calibration step matters even when nothing seems wrong. Front camera calibration is £162 inc VAT (£135 +VAT) at a centre.