New windscreen on your 1 Series, X3, 2 Series or 4 Series, and the dashboard's flagging Driving Assistant or Lane Departure Warning? The forward-facing camera, BMW's KAFAS module, is out of alignment. The dealer will quote £600 to £900 for the calibration. Through our accredited network it's a fixed £199. Here's the full picture.
You can drive the car. Driving Assistant, Lane Departure Warning, Active Cruise Control and Forward Collision Warning are offline until the camera is recalibrated. Treat them as not there. Normal brakes, steering and conventional cruise all still work. Leave more following distance until it's sorted.
BMW's forward-facing camera (KAFAS) sits behind the windscreen at the top, just in front of the rear-view mirror. New glass goes in, new bracket, and the camera position no longer matches the car's stored geometry. Here's what gets in the way of a clean calibration on a BMW specifically.
The bracket the camera sits in is bonded to the new windscreen. Even a millimetre off the original position and the camera's aim is out of BMW's tolerance. Driving Assistant, Lane Departure Warning and Active Cruise Control all read from that camera and stop trusting it. This is the trigger on almost every BMW windscreen swap.
BMW's calibration routine runs through ISTA-NEXT (the manufacturer's diagnostic system) and a BMW-spec target board. Most mobile windscreen vans and general garages don't carry ISTA access. Without it, you get a partial calibration that the tool reports as done but the car still flags the warning. Our network only routes BMW jobs to workshops with full ISTA capability.
On Driving Assistant Pro vehicles (common on 3 Series G20, X3 G01 and most 4 Series G22), the system also reads a front radar behind the kidney grille. Recalibrating the camera alone won't clear all the warnings if the radar was also disturbed during front-end work. Pre-scan tells the workshop what to align before the job starts.
BMW windscreens are spec'd for the KAFAS camera with a specific aperture, optical clarity in the camera zone, and a heater element on i-models and other heated screens. Aftermarket glass that fits physically can still fail calibration because the camera-zone clarity isn't there, or the bracket position is off by enough. If calibration won't hold, the glass brand is the first thing our technicians ask about.
Late-model BMWs, especially the i4, iX and 5 Series G60, run a heated camera zone in the windscreen to keep the lens clear in cold weather. Aftermarket glass that doesn't carry the heater element triggers a separate fault alongside the calibration warning. The workshop confirms the spec on the new glass before booking the calibration.
BMW's Intelligent Battery Sensor monitors battery state through the work, and the assist systems store their settings while the engine's off. If the battery went flat during the windscreen replacement (a common issue if the fitter ran sliders or vacuums off the car), the assist systems can lose their settings and several warnings appear together. A scan and recalibration restores them.
Lifting the headlining trim around the rear-view mirror to refit the camera is fiddly, and the camera connector or its retaining clip doesn't always go back fully. That throws the same warning as a misaligned camera. Worth asking the fitter to recheck before you book anything.
Worth checking first: ask the fitter what brand of glass went on (the marking in the bottom corner of the windscreen tells you), and confirm the camera was reseated properly behind the rear-view mirror trim. If Driving Assistant is still showing, the camera needs recalibrating.
On a BMW that means a workshop with ISTA-NEXT, a BMW-spec target board, and a calibration bay with a verified level floor. The procedure is static: target board at the correct distance, ISTA runs the camera initialisation, post-scan confirms the systems are reading. If the BMW has Driving Assistant Pro, the front radar is calibrated in the same visit.
It's a fixed £199 through our network: scan, calibration, certificate. Same price wherever you are in the UK. The dealer route for the same job runs £600 to £900 in most parts of the country. There's no charge for the diagnostic if you decide not to go ahead. The full procedure is in our ADAS calibration guide.
Pricing is fixed across our network. Same price wherever you are in the UK. Your tier is set by what work has been done, not by your postcode or your car's make.
All prices include the diagnostic scan, the calibration procedure (static, dynamic, or both as required), a post-calibration check, and a calibration certificate. No charge for diagnostic if you decide not to proceed.
Send your registration and a line on what's happened. We'll come back with the fixed price, the nearest accredited workshop, and the soonest available slot.
BMW calibration runs through ISTA-NEXT, the manufacturer's diagnostic system, and needs a BMW-spec target board and a verified level floor. Mobile windscreen vans don't carry that setup, and most general garages aren't ISTA-licenced either. The job won't lock on a generic scan tool, even if it looks like it ran to the end. Fitters refer those jobs to a specialist workshop, and our network is built for that.
Windscreen camera calibration is a fixed £199 across our accredited network. That covers the diagnostic scan, the camera calibration itself (and the front radar too on Driving Assistant Pro cars), and a calibration certificate. The dealer route for the same procedure is typically £600 to £900. Same job, same OEM-spec result, fixed price.
No. Under the Block Exemption Regulation, an independent workshop can carry out the calibration without affecting your warranty, provided they follow BMW's documented procedure and use ISTA-compatible equipment. Our accredited workshops do both, and the certificate we issue documents what was done. That record sits on the car's service history and protects your position with BMW.
BMW i-models and several recent G-series cars run a heated camera zone in the windscreen to keep the lens clear in cold weather. Aftermarket glass that doesn't carry the heater element shows up as a separate fault alongside the calibration warning, and the calibration alone won't clear it.
The fix is OEM glass under the same insurance claim, which BMW's position statement supports. We can supply the calibration certificate as documentation if the insurer needs to see what was attempted.
Same forward camera, different warning. Often appears alongside Driving Assistant on BMW.
Different trigger, same calibration. Common follow-on if your BMW also had front-end work.