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Engine coolingPart report

2003 Toyota Sequoia Engine cooling Problems

Complaints
16about this part
Share
3%of 565 total for the year
Median mileage
46,000miles
Trend
StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.

NHTSA recorded 16 complaints about the engine cooling of the 2003 Toyota Sequoia, 3% of the 565 complaints for this model year. Where a mileage was given, the median is 46,000 miles.

Example complaints

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

“I have a 2003 Toyota Sequoia that just had a major computer system failure with the skid control systems. There was no warning, the vsc lights came on in the dashboard and a loud sound came from the engine, like bending metal. This vehicle only has 28k in 3 1/2 years, and that means I'm 6 months past bumper to bumper warranty. I had heard about this problem previously because I had a similar problem within months of buying the car, but that was covered under warranty. …”

NHTSA complaint #10180667, filed 2007-01, 28,900 miles

“9/07 - a load noise sounded and the vehicles brakes and steering locked up on me while I was accelerating and approaching a 4 way stop light. I took the vehicle in to folsom lake Toyota for service that day. They told me they could not find the problem, maybe it was do to a low charge from the battery. So I had them replace the battery. 10/1/07 a few weeks later I was accelerating and going on to the freeway when all of a sudden the brake noise sounded the steering and brakes locked up and all my engine lights came on then I completely lost power. …”

NHTSA complaint #10206587, filed 2007-10, 71,000 miles

“First oil gauge. When I drive the SUV between 60 to 75 MPH, the oil gauge point to zero. Dealer unable to fix it. Second. There are coolant pipe routed under vehicle without any protection. It is a great change broken by minor road hazard. My 2003 4wd sr5 Sequoia was broken at 12/19/2003. It took dealer 3 days to replace the 1 meter length pipe, because it is impossible for dealer to place the pipe at original position. This is bad design. No protection and not easy replace. I check other big SUV at market. They all use plastic shield to protect similar pipe under their SUV. …”

NHTSA complaint #10051092, filed 2003-12, 5,700 miles

“My engine light keeps coming on and the dealership that I have been taking it to keeps telling me that they can not fine anything. The warranty run out at 60,000 miles and I'm at 59260. I have taking the vehicle 3 time. I believe they are trying to wait for my warranty to run out.”

NHTSA complaint #10243976, filed 2008-09

“Ammonia and sulfur smell in the cabin. Causing nausea and allergy problems. My problem is so bad that my doctor is thinking about writing a prescription saying I can't drive this vehicle. This is a current problem with other seqouia's. There are numerous complaints through out the USA.”

NHTSA complaint #10045156, filed 2003-10

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
2011212%
2010826%
200869%
200764%
200652%
2005226%
200431%
2003163%
2002122%
2001163%

Other parts of the 2003 Toyota Sequoia

Electronic stability control
165 complaints
Brakes
155 complaints
Body and structure
98 complaints
Vehicle speed control
91 complaints
Other or unknown
80 complaints
Electrical system
66 complaints
Air bags
41 complaints
Suspension
40 complaints
Steering
23 complaints
Engine
14 complaints
Latches, locks and linkages
13 complaints
Transmission and drivetrain
13 complaints

← All problems reported for the 2003 Toyota Sequoia

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 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