2020 Lexus GX Pre-Purchase Inspection Checklist
Known Issues — 2020 Lexus GX
MODERATE
4.6L 1UR-FE V8 oil consumption on high-mileage units
MODERATE
Active height control suspension air bag failure
MODERATE
Transfer case actuator failure causing 4WD engagement issues
MODERATE
Rear differential fluid contamination from worn seals
MINOR
Infotainment outdated — DVD-based nav no longer updated
MINOR
Rear door window regulator failure
What to Inspect
- Oil consumption records — check dipstick
- Suspension height operation if Active Height Control equipped
- 4WD engagement in all modes (2H/4H/4L)
- Rear differential for leaks and noise
- Transfer case actuator operation
- Scan for all stored fault codes
Expected Maintenance Costs
| Service | Interval | Cost |
|---|---|---|
| Oil change (synthetic) | every 10,000 miles | $130-$200 |
| Transfer case fluid | every 30,000 miles | $100-$180 |
| Front/rear differential fluid | every 30,000 miles | $150-$250 |
| Spark plugs (iridium) | every 90,000-120,000 miles | $300-$500 |
| Brake fluid flush | every 3 years | $120-$180 |
| Air filter | every 30,000 miles | $40-$80 |
| Coolant flush | every 100,000 miles | $150-$250 |
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