2007 model year · 3,100+ owner reports · Updated April 2026
According to Au7o's analysis of 3,100+ owner reports, the 2007 Lexus GX has 2 documented known issues. No issues are rated critical, indicating generally reliable ownership. The most commonly reported issue is Secondary Air Injection Pump Failure with 2,200 owner reports. Across all issues, repair costs range from $400 to $2,000. DIY maintenance guides at au7o.io.
On the 2003-2009 Lexus GX 4.7L 2UZ-FE, the secondary air injection (SAI) system pump and switching valves fail due to moisture intrusion and corrosion. The SAI pump introduces fresh air into the exhaust during cold starts to reduce emissions, but the pump motor corrodes internally and the switching valves stick. This triggers a check engine light with SAI-related codes.
Replace the secondary air injection pump and switching valves. Clean or replace the air injection check valves. Clear codes and verify operation. Some owners in non-emissions-testing states choose to bypass the system entirely with a tune.
Parts and tips from 2,200+ owners who fixed this issue
On the 2003-2009 Lexus GX 4.7L 2UZ-FE, the center differential lock actuator on the GX470 fails due to internal motor wear and electrical contact corrosion. When the actuator fails, the center diff lock cannot be engaged for low-range off-road use. The actuator is mounted on the transfer case and is exposed to road debris and moisture.
Replace the center differential lock actuator motor. The actuator is accessible from under the vehicle on the transfer case. Use the OEM Toyota actuator for reliability. After replacement, verify engagement by testing in a straight line at low speed on a loose surface.
Parts and tips from 900+ owners who fixed this issue
EQUIPMENT:OTHER:LABELS
TOYOTA IS RECALLING CERTAIN MODEL YEAR 2006 THROUGH 2009 SIENNA AND 2009 LEXUS GX PASSENGER VEHICLES. THE VEHICLE CAPACITY WEIGHT ON THE TIRE AND LOADING INFORMATION LABEL AND THE GVWR ON THE CERTIFICATION LABEL IS INSUFFICIENT FOR CERTAIN VEHICLES. SOME VEHICLES WERE ACCESSORIZED THROUGH VEHICLE PROCESSING CENTERS AND HAD ACCESSORIES INSTALLED THAT CAUSED THE VEHICLE TO EXCEED THE GVWR VALUE. THESE VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO 110, "TIRE SELECTION AND RIMS," AND 49 CFR PART 567.
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According to Au7o's analysis of 3,100+ owner reports, the 2007-2007 Lexus GX has 2 documented issues. The most frequently reported are: Secondary Air Injection Pump Failure, Center Differential Lock Actuator Failure. None are rated critical, but regular maintenance is recommended.
The 2007-2007 Lexus GX has 2 known issues documented across 3,100+ owner reports. No issues are rated critical, suggesting generally good reliability. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
Repair costs for known Lexus GX issues range from $400 to $2,000, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
The secondary air injection (SAI) system pump and switching valves fail due to moisture intrusion and corrosion. The SAI pump introduces fresh air into the exhaust during cold starts to reduce emissions, but the pump motor corrodes internally and the switching valves stick. This… Repairs typically run $800-$2,000. Severity: medium.
The center differential lock actuator on the GX470 fails due to internal motor wear and electrical contact corrosion. When the actuator fails, the center diff lock cannot be engaged for low-range off-road use. The actuator is mounted on the transfer case and is exposed to road de… Repairs typically run $400-$1,000. Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
