Lexus RX 350 & ES 350 Water Pump Leak (2GR V6) Guide
The 3.5L 2GR V6 in the Lexus RX 350 and ES 350 (also the Toyota Camry, Highlander, Sienna and RAV4 V6) is a durable engine, but its water pump commonly develops a slow seep. Caught early it is a routine repair; ignored, low coolant can overheat the engine.
Call (650) 588-9199Labor Time
2-4 hours depending on model
Typical Cost
Quoted after inspection — RX and ES versions differ in labor
Serving
Colma, Daly City, San Bruno, South San Francisco, Burlingame, Hillsborough
Warranty
2 years / 24,000 miles on OEM parts, 1-year workmanship
Common Symptoms
If you experience these symptoms, your Lexus RX 350, ES 350 (2GR-FE / 2GR-FKS V6) may need water pump replacement:
Why This Happens
Understanding the root cause helps prevent future issues:
Our Repair Process
How we handle water pump replacement at Express Auto in San Bruno:
Cooling system pressure test to confirm the leak source (pump vs. hoses or radiator)
Replace the water pump with an OEM Toyota/Lexus pump and new gasket
Inspect the drive belt, tensioner and idler and replace if worn
Refill with Toyota Super Long Life Coolant and bleed air from the system
Pressure test again, verify the thermostat opens and road test to operating temperature
Parts & Warranty
Parts Used
water Pump
OEM Toyota/Lexus water pump and gasket
coolant
Toyota Super Long Life Coolant (pink, pre-mixed)
belt
Drive belt and tensioner if worn
Service Details
Labor Time
2-4 hours depending on model
Typical Cost
Quoted after inspection — RX and ES versions differ in labor
Warranty
2 years / 24,000 miles on OEM parts, 1-year workmanship
Frequently Asked Questions
Can I keep driving my RX 350 with a leaking water pump?
Only briefly, and only while watching the coolant level. A seep can turn into a fast leak, and running the engine low on coolant can warp the cylinder heads. Have it pressure-tested soon.
Does the 2GR V6 use a timing belt?
No — the 2GR uses a timing chain, so the water pump is not replaced together with a timing belt as on some older engines. It is a standalone repair.
Is this the same repair on a Toyota Highlander or Camry V6?
Yes. The Highlander, Camry, Sienna and RAV4 V6 share the 2GR engine family, so the symptoms and repair are essentially the same.
Need this Lexus repair?
Book online in 2 minutes — no deposit. Honest estimate before any work — we service Lexus RX 350, ES 350 (2GR-FE / 2GR-FKS V6) and other makes.
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