2003 Lexus RX (XU30)
Browse our directory of 2003 Lexus RX (XU30) vehicles. Access instant MOT history reports, tax status, and reliability insights for any registration listed below.
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Common Problems & Reliability
The 2003 Lexus RX (XU30) has 1 known issue. 1 are moderate concerns worth inspecting before purchase.
Radiator End-Tank Seam Splitting and Coolant Loss
ModerateThe original Denso radiators fitted to the XU30 series suffer from age-related embrittlement of the plastic side/bottom end tanks and crimped aluminium core seams. In the UK climate, repeated thermal cycling and road salt spray accelerate corrosion along the bottom core channel, leading to slow weeping of Toyota Super Long Life pink coolant. If left unnoticed, the gradual loss of coolant can cause severe engine overheating and cylinder head gasket failure on the 3.0, 3.3, and 3.5-litre V6 engines.
Symptoms: Sweet coolant smell noticeable from the front grille after driving, Gradual drop in engine coolant expansion tank level over several hundred miles...
Est. repair cost: £350–£700
Buying Tips for the 2003 Lexus RX (XU30)
- Confirm the timing belt was replaced on schedule at 100,000 miles or 7 years
- Check all power equipment including electric tailgate and sunroof operation
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