We have classified the 4 complaints from 2007 Cadillac STS about EXTERIOR LIGHTING into the following categories.
Left headlight fills with water during a rainstorm or car wash. headlamp is foggy with moisture reducing the light output and will cause a premature headlamp failure.
My cadillac sts left front light seal leaks water into it and now the headlight won't come on. this was notice upon purchasing the vehicle and was told it was a manufactures problem. now my head lamp only works on brights.
The headlights have a major fogging issue which leads to impaired visibility both for the driver of the car and for other drivers on the road. this issue is being reported in sts and cts cadillac forums at least as far back as 2008. i believe this is a defect in either the design or manufacturing of these components. *tr
2007 cadillac sts. consumer writes in regards to defective composite headlamps. *ld the consumer stated the headlamp assembly would fog up. there was two inches of water built up in the assembly due to condensation. *js
#1 the above mentioned vehicle was purchased in chicago on december 22, 2009. the odometer read 29,832 miles. when the car was driven back to maryland, a maryland vehicle inspection was required. the headlights failed the inspection. #2 over the past two years, condensation built up inside both the headlights. in the past month, i noticed there was one inch of water in the driver side headlight. the water has now shorted out the light. i believe this problem is a defect and i have read similar complaints on car forums on the internet. cadillac will not cover the cost of the repair because the car now has 63,000 miles. i am on a fixed income and cannot afford the cost of the repair which cadillac quoted @ $1250.00.