Water pump replaced on my Lexus RX 400h ...and a few days later radiator died

Asked by Aug 11, 2015 at 02:24 PM about the 2006 Lexus RX 400h AWD

Question type: Maintenance & Repair

I had the water pump replaced on the hybrid engine as part of a routine 90Kservice and
within a few days my radiator was gone. Service center says they are not related!!! Please

2 Answers


They are related in the sense that there in the same system, they are both parts help keep the car from over heating. If you are asking if the pump caused the radiator to go, then the answer would be no. I think it was on its way out, that's why you were having the 90k service done. I think it should have been replace then...

1 of 1 people found this helpful.

Lmost same thing happened to my lexus 400H. After they changed the timing belt and water pump, I discovered a hairline crack on the upper side of the radiator. Whenever I filled the radiator it leaked out.Finally I decided not to fill it anymore. So I kept it the way it is, but kept a gallon of anti freeze in the car. It has been 5 years. It has not over heated even in the hottest summer with a/c on and plenty of heat in the winter. But I think it had a tow package which means bigger radiator? At 151K it is still running like a champ. What I am wondering when the Hybreed battery dies, will it run on its own gasoline engine? Common sense says it should. Does anybody has any idea?

Your Answer

Add photo

Related Questions

Search Lexus RX 400h Questions

Lexus RX 400h Experts

#1 Eitan Rubinfeld
Eitan Rubinfeld
Reputation 130
#2 mythos
Reputation 100
#3 TWFarrington
Reputation 70
View All

Related Models For Sale

Used Lexus RX 350
304 Great Deals out of 20,347 listings starting at $4,750
Used Lexus RX 330
48 Great Deals out of 1,440 listings starting at $4,495
Used Toyota Highlander Hybrid
23 Great Deals out of 2,029 listings starting at $4,400
Used Toyota Highlander
360 Great Deals out of 26,009 listings starting at $2,800
Used Acura MDX
270 Great Deals out of 18,600 listings starting at $1,495
Used Toyota Camry
1,104 Great Deals out of 90,761 listings starting at $1,599
Used Toyota 4Runner
260 Great Deals out of 19,021 listings starting at $2,500
Used Lexus IS 250
178 Great Deals out of 4,912 listings starting at $4,300
Used Lexus GX 470
45 Great Deals out of 1,186 listings starting at $4,995
Used Toyota RAV4
890 Great Deals out of 67,125 listings starting at $1,990
Used Lexus ES 350
227 Great Deals out of 16,102 listings starting at $4,997
Used Honda CR-V
920 Great Deals out of 59,346 listings starting at $1,990

Used Cars For Sale

2008 Lexus RX 400h AWD For Sale
5 Great Deals out of 115 listings starting at $7,200
2007 Lexus RX 400h AWD For Sale
72 listings starting at $6,800
2006 Lexus RX 400h AWD For Sale
3 Great Deals out of 169 listings starting at $5,000

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.