christopherrichter23

XC90 Rain Light Sensor Issue

Hey, hoping someone can shed some light on this weird issue I'm having with my 2021 Volvo XC90 hybrid. The rain-light sensor seems to be on the fritz. I'm getting an error stored in the memory, and the auto-wiping mode in the rain just isn't working. Plus, the automatic headlight control is dead, and the speedometer dimming isn't functioning either. Oh, and the lights switch on. Anyone experienced this before? Mileage is at 84300 km.

A 2021 Volvo XC90 hybrid was experiencing issues with the rain-light sensor, affecting auto-wiping, automatic headlight control, and speedometer dimming. The problem was identified as bubbles under the gel pad of the sensor, distorting its function. Replacing the gel pad resolved the issue, restoring all affected features.

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4 comment(s)

Sounds like a sensor fault alright. Have you checked for any obvious damage to the windshield around the sensor area? Any sign of delamination or bubbles under the gel pad? That's a common cause.

Bubbles under the gel pad? I haven't specifically looked for that. Where exactly should I be looking, and how obvious would it be?

Yeah, it's where the sensor 'reads' through the glass. It might not be immediately obvious, but look closely at the area where the sensor sits against the windshield from the outside. Small bubbles can distort the sensor's view. If you suspect that, I'd get it checked out by a workshop.

Thanks for the tip! I checked, and you were spot on – tiny bubbles under the gel pad. Took it to the shop; they replaced the gel pad. Cost me 62€, and everything is working perfectly again! Really appreciate the help!

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VOLVO

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XC90