Water Pump Problems of Lexus RX

Check engine light came on on highway. Within a few miles, the hood began to smoke, so immediately pulled over. Towed to mechanic and was told water pump failure caused engine to overheat. Engine is destroyed.

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Water pump failed on 2009 lexux Rx350 at 61500 miles and just 4 months over the powertrain warrenty. Lexus declined the claim. Engine overheating caused head gasket failure and warped cylinder head. 1. As per local mechanic who replaced water pump , there were indication of coolant leaking from water pump seal and it must be leaking for quite long time, even when vehicle was under warranty. There was enough volume of coolant when this incident happened, indicates that leakage was very minor and my not appear on the floor where car was parked. 2. Water pump is part of powertrain and has no direct influence of driving pattern. Failure of water pump at 61000 miles is very pre-mature and indicate toward inherent problem with water pump quality. 3. Safety issue: there were no signs of water pump failure until last moment when it actually gave up and check engine lights came up. There was very little time before check engine lights came on and further damage due to overheating. If it was ignored for couple of miles car would have caught into fire 4. Powertrain warranty is 70000 miles or 72 months, whereas cars mileage is 61000 and time since first usage is 75 months (just 3 months over the warranty). Considering close proximity to warranty expiration, Lexus should consider this for warranty extension. 5. This engine series ( 3. 5l ) is infamous for cooling system issues and several service bulletins have been issued regarding it. 6. Several complains have been filed about the similar problem, where water pump failure and subsequent engine damage.

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Water pump failed without any indication of failure. I was going on highway and all of sudden vsc light came up . After driving a mile engine light came up. Since next exit was 3 miles I drove through exist and pull car on safe parking lot. By the time I stopped vehicle, I saw smoke coming out of engine. I had to call aaa and get it towed to local mechanic for primary diagnostic before I towed it over to Lexus dealership 25 miles away. Called Lexus dealership but they refused to cover under Lexus power train warranty ( 72 months or 70000 miles ) just because warranty expired 3 months back even though mileage are still under the limit. Dealership asked me talk to Lexus customer service. I called Lexus customer service and explained the problem asking them to provide goodwill warranty coverage. Literally , the worst people I dealt with . They refused to take any accountability of issue and ask me to go and get it repaired. My bases for asking warranty coverage was due to 1. Close to warranty expiration date ( just over 3 months and still under mileage 61,000) 2. Fire hazard due to failure of coolant pump without any indication. 3. Reputation of Lexus being reliable and dependable car.

The water pump went and while replaced the rack and pinion is leeking. . . . . Seems early for problems with these cars and maybe a major safety issue!.

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Only 60k miles for the car, the water pump leaks and need to complete replacement.

See all problems of the 2004 Lexus RX 🔎.