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Exterior lightingPart report

2005 Cadillac STS Exterior lighting Problems

Complaints
5about this part
Share
5%of 101 total for the year
Median mileage
28,500miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 5 complaints about the exterior lighting of the 2005 Cadillac STS, 5% of the 101 complaints for this model year. Where a mileage was given, the median is 28,500 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Was driving low beam lights went out smelled wires burning left side wire harness was melting I was on my way home on highway 51 north at around d 10:45 in the evening”

NHTSA complaint #11232841, filed 2019-07, 132,441 miles

“Front car seats are making a farting noise, I have had in the dealership 3 times & each time they said they fixed the problem they have not. Also, my front headlamp has stress cracks in it they told me they ordered it, well its been 8 weeks & still no headlamp the manager was suppose to call me & never has”

NHTSA complaint #10191650, filed 2007-05, 15,000 miles

“I have had ongoing problem with this since I bought the car used last august 2012. The passenger side headlamp cover gets a lot of moisture inside. I was going to fix myself so I went to Cadillac forums and searched problem. Amazed to find all models of Cadillac and always on passenger side is the moisture problem. Started in 03 model year and last questioned on 08 model year (after that warranty problem so dealer would handle. This is to much to be a coincidence and a recall should be issued. Thank you in advance. …”

NHTSA complaint #10557563, filed 2013-12, 42,000 miles

“High beam headlights out of adjustment left side way high and to the left lights up trees not road. Right side way to high. Per Cadillac and dealer no adjustment is possible. Only adjustment is on low beams, none for high beams. Complaints to Cadillac went no place. After many e-mails finally talked to a real person and was offered $200.00 of service work to go away, I turned it down, per Cadillac they would now close my compliant out. I drive on county roads, two lane farm county and the high beams do not light up the road ahead of my car, only tree tops to the left. …”

NHTSA complaint #10322316, filed 2010-03, 500 miles

Related service bulletins

Exterior lighting: other model years

YearComplaintsShare of year
2011114%
200917%
200824%
2007612%
200555%
2004114%
2003113%
200118%
200018%

Other parts of the 2005 Cadillac STS

Electrical system
23 complaints
Transmission and drivetrain
18 complaints
Engine
12 complaints
Air bags
11 complaints
Fuel system
8 complaints
Brakes
7 complaints
Engine cooling
7 complaints
Other or unknown
6 complaints
Seats
6 complaints
Vehicle speed control
6 complaints
Body and structure
5 complaints
Suspension
5 complaints

← All problems reported for the 2005 Cadillac STS

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology