Sensor Care, Towing and Accessories

ADAS care is rarely about polishing a sensor until it shines. It is about keeping the correct viewing area unobstructed and recognising when a change to the vehicle may require a closer look.

Start with the owner’s manual

ADAS sensors may be visible or hidden behind windscreens, badges, grilles and bumper covers. The owner’s manual identifies accessible sensor areas and any special cleaning precautions.

Do not remove trim or attempt to adjust a sensor. A camera lens behind the windscreen, for example, should not normally be touched by the owner; clean the glass in front of it as instructed.

Routine cleaning

• Use clean water, suitable vehicle-cleaning products and a soft cloth on accessible surfaces.
• Remove mud, insects, salt, frost and loose contamination gently.
• Keep both sides of the windscreen clear in front of cameras.
• Do not use abrasive pads, sharp tools or harsh solvents.
• Do not polish a camera lens or radar cover unless the manufacturer specifically permits it.

There is no universal weekly or monthly sensor-calibration schedule. Inspect sensor areas when dirty or before a long trip, and follow the vehicle’s maintenance information.

Car washes and pressure cleaning

Most vehicles can use ordinary car-washing methods, but equipment and precautions differ. Avoid holding a high-pressure nozzle close to sensors, camera lenses, washer jets, seals or damaged trim. If a sensor cover or bumper is loose or cracked, repair it before subjecting it to strong jets or brushes.

An automatic wash does not normally recalibrate a sensor, and washing alone should not misalign a correctly mounted unit. New warnings after washing may instead indicate temporary obstruction, moisture, existing damage or a fault requiring inspection.

Wax, coatings and wraps

Do not assume a transparent product is invisible to a sensor. Film, vinyl, paint, filler, wax build-up or a coating over a designated sensor zone may alter optical or radio-frequency performance.

Before wrapping, repairing or refinishing a bumper, grille, badge or windscreen area, obtain the manufacturer requirements. Some radar zones specify material, thickness, repair and paint limitations.

Accessories

Bullbars, number-plate brackets, driving lights, dashcams, phone mounts, roof loads, tow equipment and bicycle racks can obstruct a sensor or change its field of view. They may also create reflections or block an interior monitoring camera.

Use vehicle-compatible mounting positions and confirm whether installation requires coding, aiming, calibration or system deactivation.

When to seek help

Arrange inspection when a warning remains after the area is clean and dry, a sensor cover is damaged, moisture is visible inside a camera, an accessory changes system behaviour or alerts begin after body or windscreen work.

Key point

Good sensor care is gentle and vehicle-specific: keep the intended viewing area clear, avoid adding material over it and never guess at an adjustment or calibration requirement.