2019 Lexus GS Problems: 1 Issues Every Owner Should Know
2019 model year · 1,400+ owner reports · Updated April 2026
According to Au7o's analysis of 1,400+ owner reports, the 2019 Lexus GS has 1 documented known issues. No issues are rated critical, indicating generally reliable ownership. The most commonly reported issue is Water Pump Premature Failure with 1,400 owner reports. Across all issues, repair costs range from $500 to $1,200. DIY maintenance guides at au7o.io.
All 1 Known Issues
On the 2013-2020 Lexus GS, the water pump on the GS models fails prematurely, typically between 60,000-100,000 miles. Coolant leaks from the weep hole as the internal seal deteriorates, and the pump bearing develops play causing a whining noise. If not addressed, overheating and potential engine damage can occur.
Common Symptoms
- Coolant leak from front of engine
- Whining noise from water pump area at idle
- Engine temperature rising above normal
- Low coolant warning light
- Sweet coolant smell from engine bay
How to Fix
Replace the water pump assembly and thermostat together as a preventive measure. Use OEM or high-quality aftermarket parts (Aisin brand is the OEM supplier). Replace the serpentine belt and tensioner at the same time if they show wear.
What Owners Are Using
Parts and tips from 1,400+ owners who fixed this issue
- UpgradeAisin WPT-190 water pump — this is the actual OEM supplier for Toyota/Lexus water pumps at a fraction of the dealer price. Identical quality. (Aisin #WPT-190)