marieschmid5

Cobalt Rain Light Sensor Fault

I'm having trouble with the rain-light sensor on my 2009 Chevrolet Cobalt with a gasoline engine. It has 42645 km. Here's what's happening: 1. Error stored in the computer. 2. Automatic wiping doesn't work in rain. 3. Automatic headlights are inoperative. 4. Speedometer dimming isn't working. 5. Lights are always on. I think it might be bubbles under the sensor's gel pad. Any ideas?

The rain-light sensor on a 2009 Chevrolet Cobalt was malfunctioning, causing issues with automatic wiping, headlights, speedometer dimming, and lights remaining on. The problem was suspected to be due to bubbles under the sensor's gel pad. After confirming the presence of bubbles, the sensor was replaced at a workshop, resolving the issues.

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4 comment(s)

I had a similar problem with my Cobalt. The rain-light sensor went haywire. Do you notice any visible imperfections or cloudiness on the windshield around the sensor?

Yes, I see some tiny imperfections, like minuscule bubbles, under the gel pad near the sensor. Does that mean that's the problem? Do I need a new windshield, or is there another fix?

That sounds like exactly what happened to mine. Those bubbles interfere with the sensor's ability to read the light properly. I'd recommend taking it to a workshop. They'll be able to confirm the issue and advise on the best course of action.

Thanks for the help. I went to a workshop, and they saw the bubbles under the gel pad. They replaced the sensor for 62€, and it fixed the problem. Your advice helped a lot.

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CHEVROLET

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COBALT