Air bubbles between the windshield and rain sensor...

Greyfox · 07-20-2016, 04:05 PM

will this cause issues with the function of the automatic wipers? ie... wipers will not adjust speed due to heavier rain.

Also, had a "glass" tech tell me that the sensor must be "taught" by BMW after replacing the windshield.

DJtoad · 07-20-2016, 05:35 PM

A few tiny bubbles is normal but large ones or a lot of them are not. While you can recalibrate the rain sensor, it shouldn't be required. If they did a poor job installing the sensor and trapped a lot of air between it and the windshield I'd insist that they replace it.

Greyfox · 07-20-2016, 06:12 PM

The bubble was about the size of a nickel with a bunch of pin head size above it. The tech said they don't install them... which contradicts the place that did the original windshield installation which said they did. He also tried to claim that my wipers wouldn't go to high speed because of the sensor detecting heavy rain. I pretty much went into pissed off mode at that point.

But I did get a new windshield out of the deal and they cleaned up the squeezed out sealant that was on the pillar upholstery.

07-20-2016, 04:05 PM	#1
Greyfox Colonel 1208 Rep 2,835 Posts Drives: 2007 328xi E91 - 330k+ (miles) Join Date: Feb 2014 Location: USA iTrader: (2)	Air bubbles between the windshield and rain sensor... will this cause issues with the function of the automatic wipers? ie... wipers will not adjust speed due to heavier rain. Also, had a "glass" tech tell me that the sensor must be "taught" by BMW after replacing the windshield.
	Appreciate 0 Tweet Quote

07-20-2016, 05:35 PM	#2
DJtoad Captain 58 Rep 665 Posts Drives: 2010 535i M Sport Join Date: May 2008 Location: Ellicott City, MD iTrader: (2)	A few tiny bubbles is normal but large ones or a lot of them are not. While you can recalibrate the rain sensor, it shouldn't be required. If they did a poor job installing the sensor and trapped a lot of air between it and the windshield I'd insist that they replace it. __________________ 2010 535i M Sport - Platinum Gray/Dakota Black/Anthracite Bamboo 2016 Jaguar F-Type S AWD - Polar White/Cirrus
	Appreciate 0 Quote

07-20-2016, 06:12 PM	#3
Greyfox Colonel 1208 Rep 2,835 Posts Drives: 2007 328xi E91 - 330k+ (miles) Join Date: Feb 2014 Location: USA iTrader: (2)	The bubble was about the size of a nickel with a bunch of pin head size above it. The tech said they don't install them... which contradicts the place that did the original windshield installation which said they did. He also tried to claim that my wipers wouldn't go to high speed because of the sensor detecting heavy rain. I pretty much went into pissed off mode at that point. But I did get a new windshield out of the deal and they cleaned up the squeezed out sealant that was on the pillar upholstery.
	Appreciate 0 Quote