2026-09-15
Lexus GX 460 Thermostat Replacement Malaysia
GX thermostat opens at 82°C. Failure causes overheating (stuck closed) or chronic under-temperature (stuck open). Replacement: including gasket and labour. In Malaysia's heat, a GX running hot should be stopped immediately — do not risk V8 engine damage.
Lexus GX 460 Thermostat
- GX 460 (1GR-FE) thermostat: opens at ~80°C; simpler cooling system than hybrids — one circuit, one thermostat
- Thermostat inspection: inspect at 100,000 km — if stuck open, engine takes long to heat and heater is weak; if stuck closed, overheating occurs
- Off-road thermostat stress: GX used for 4WD — thermostat sees temperature swings from idle off-road crawl to highway; replace at 120,000 km if frequently off-road
- Genuine Toyota thermostat: use only Toyota OEM thermostat for 1GR-FE — same part as Land Cruiser Prado; available through Toyota dealers