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Rain-light sensor fault

Controls wipers and headlights in rain and darkness.

Costs

Every car issue can be caused by different things. Here are the most common ones

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Most Expensive

Moderate costs

Moderate costs

Cheapest case

Discussions

User of our Carly Community asked the following questions regarding that fault:

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Details

Probability

Based on the values and symptoms you have entered, a crude estimation of the probability of this problem can be made

high-probability

HIGH

Typical consequences

If this defect is detected, it may lead to the following problems:

  • Restriction of driving comfort
  • Malfunction of the vehicle electronics

Function of rain-light sensor

The rain/light sensor is attached to the windshield from the inside and is located in the wiper area of the windshield wiper behind the rearview mirror. It is held securely in its mount by a metal spring. The bracket is usually permanently bonded to the windshield and therefore cannot be replaced.

A silicone gel pad is located between the rain/light sensor and the windshield. This ensures the optical connection to the windshield and prevents dirt from penetrating. Depending on the vehicle equipment, the sensor enables automatic adjustment of the driving light and wiping frequency to the weather conditions.