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Engine coolingPart report

2006 Lexus IS 350 Engine cooling Problems

Complaints
4about this part
Share
4%of 93 total for the year
Median mileage
90,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 4 complaints about the engine cooling of the 2006 Lexus IS 350, 4% of the 93 complaints for this model year. Where a mileage was given, the median is 90,000 miles. 1 recall campaign on record is filed under a similar system.

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.

“The camshaft timing gear was replaced by jim fault Lexus was driving vehicle home and all the dash lit up and engine had no oil. Car hasn't run the same since then without oil needing to be replace 3.5 liters of oil every 300-500 miles so I'm really afraid to go anywhere in my vehicle. Need help! The consumer stated she started having problems with the engine after retrieving the vehicle from the dealer. There was a noise coming from the engine when it was cold and the check engine light illuminated several times, as well as the low oil light. …”

NHTSA complaint #10643756, filed 2014-10, 94,014 miles

“I experienced a problem that may be the same problem as the Lexus valve spring problem, or related to it. The mechanic said it was caused by a design flaw. Here is part of a letter I sent to Lexus in march 2010: I own a 2006 Lexus is350, which I had been very happy with until february 1, 2010. As I was driving to work, there was a loud noise from the engine and the dashboard lit up with warning lights. I pulled over, read the owner?s manual, and drove to a Lexus dealership. The four year old car only had about 27,000 miles on it. Unfortunately, my warranty ended in december 2009. …”

NHTSA complaint #10348612, filed 2010-08, 27,000 miles

“My vehicle, and doing research there are numerous other Lexus models and years all experiencing oil loss from the timing chain cover gasket causing oil loss that could pose a potential risk to the engine from oil loss and affect drivability and safety. Lexus has not provided a recall on this known issue. They request $3500 to fix the leak with a new gasket. This has the potential to eventually lock up the engine if enough oil leaks out and could cause an accident.”

NHTSA complaint #10549420, filed 2013-10, 90,000 miles

“S10 appropriate handling - copy of letter sent to Lexus corporation from re to problems with her 2006 Lexus is350. The consumer stated the vehicle was making grinding sounds upon start-up. Three days later, the consumer was informed the grinding sound was due to problems with the camshaft gear assembly. After leaving the dealership, the consumer smelled a faint burnt odor, but assumed the air filter might need to be replaced. After a while, the smell became worse and the consumer noticed smoke emitting from the exhaust and from underneath the hood. …”

NHTSA complaint #10375708, filed 2011-01

Related recalls

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
200827%
200644%

Other parts of the 2006 Lexus IS 350

Body and structure
30 complaints
Visibility (wipers, defrost, mirrors)
18 complaints
Air bags
17 complaints
Engine
11 complaints
Steering
8 complaints
Brakes
5 complaints
Electrical system
4 complaints
Fuel system
4 complaints
Vehicle speed control
4 complaints
Other or unknown
3 complaints
Equipment
2 complaints
Seat belts
2 complaints

← All problems reported for the 2006 Lexus IS 350

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 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