There are 1 owner-reported engine complaints for the 2014 Lexus LSin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
1. Component is a sealant on the valley plate that covers a coolant passage, discovered when cabin heat not providing heat. 2. Coolant valley leak can lead to severe engine damage and mechanical failure, potentially causing the vehicle to stop working and increasing the risk of accidents. 3. Open sources appear a coolant valley leak is common with Lexus LS & GX 460, LX 570, "F" series cars and LC 500 models, and is an expensive repair from being labor intensive. 4. The vehicle has been inspected by the Lexus dealership.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on May 4, 2026