Skip to content
Lion Yard Trading
Mercedes-Benz · Electrical, Sensors & Modules

Rain and light sensor

The sensor on the windscreen behind the mirror that detects rain on the glass and ambient light level.

How you know it is this

  • Automatic wipers running on a dry screen, or not running in rain
  • Headlights switching on and off at the wrong moments
  • The problem appearing straight after a windscreen replacement

Worth knowing before you buy

  • IT WORKS THROUGH THE GLASS using an optical gel pad. If the pad has an air bubble, the sensor reads rain that is not there. That is by far the most common fault and it is a pad, not a sensor.
  • A fault immediately after a new windscreen is the pad or the sensor not being seated properly.
  • Automatic headlights use the same unit, so both symptoms arriving together points here.
  • Cheap, and the gel pad is often available on its own.

What we need to quote it. The chassis number, and whether the windscreen has been replaced. The chassis number settles the generation, the body and usually the engine in seventeen characters — it is on your mulkiya. A photograph of the old part helps where there is more than one version.

Radar sensorsParking sensorsCamerasRain and light sensor
Driver assistance — schematic, to show where the part sits. Arrangement is right; it is a diagram and not a fitment reference.

Rest of the driver assistance

All electrical, sensors & modules parts
Get in touch

Rain and light sensor for your Mercedes-Benz?

Send the chassis number and a photograph of the old part. We come back with genuine, OEM and aftermarket options priced side by side, with lead times.

Mon–Sat, 8:00 AM – 6:00 PM · +971 54 303 3119 (Operations Director) · +971 54 241 0599 (Managing Director)