yidaitianjiaous Posted March 30, 2009 Share Posted March 30, 2009 Dear all, Yersterday, i found the temp sensor on top of the water tank LEAKING or SEEPING(Is it temp sensor with a rubber lid covering the wiring beside the water tank lid?) Any suggetstion for DIY? thx. Quote Link to comment Share on other sites More sharing options...
jeffls400 Posted March 30, 2009 Share Posted March 30, 2009 Most likely the o-ring that seals the sender to the tank is leaking. If you pull back the rubber cap, you can unscrew the sensor using the notches provided along the outer rim. Just make sure the tank itself does not have any cracks and then reassemble with the new o-ring, p/n 90099-14129, which will run you less than $2.00 from one of the online dealers. Jeff Quote Link to comment Share on other sites More sharing options...
jcrome04 Posted March 30, 2009 Share Posted March 30, 2009 So... is this the Coolant Temperature Sensor on the engine.. or the sensor in the expansion tank? or is coolant leaking out of the cap?? You could use a little more detail in your question.. Quote Link to comment Share on other sites More sharing options...
yidaitianjiaous Posted March 30, 2009 Author Share Posted March 30, 2009 So... is this the Coolant Temperature Sensor on the engine..or the sensor in the expansion tank? or is coolant leaking out of the cap?? You could use a little more detail in your question.. the leaking part is on the top of the plastic water tank, a black rubber lid on it. when i opened the lid, i can see a round plastic with tooth. is it the temp sensor? seeping around the plastic... Quote Link to comment Share on other sites More sharing options...
jeffls400 Posted March 30, 2009 Share Posted March 30, 2009 This sensor triggers your low coolant warning light. You can use those teeth or the notches to remove by turning with a flat blade screwdriver. Hope this helps. Quote Link to comment Share on other sites More sharing options...
yidaitianjiaous Posted March 30, 2009 Author Share Posted March 30, 2009 This sensor triggers your low coolant warning light. You can use those teeth or the notches to remove by turning with a flat blade screwdriver.Hope this helps. thx jeff, i will try it a DIY and hope to stop the seeping... Quote Link to comment Share on other sites More sharing options...
AzHotLS Posted March 30, 2009 Share Posted March 30, 2009 This sensor triggers your low coolant warning light. You can use those teeth or the notches to remove by turning with a flat blade screwdriver.Hope this helps. thx jeff, i will try it a DIY and hope to stop the seeping... Before you do..... read through this thread: http://us.lexusownersclub.com/forums/index...showtopic=53524 Quote Link to comment Share on other sites More sharing options...
yidaitianjiaous Posted March 31, 2009 Author Share Posted March 31, 2009 This sensor triggers your low coolant warning light. You can use those teeth or the notches to remove by turning with a flat blade screwdriver.Hope this helps. thx jeff, i will try it a DIY and hope to stop the seeping... Before you do..... read through this thread: http://us.lexusownersclub.com/forums/index...showtopic=53524 thx guys, great help, thank you all Quote Link to comment Share on other sites More sharing options...
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