Lexus GX 2004-09 :: Coolant Leaked All Over Engine


Aug 4, 2011

So I was going to change the oil today and noticed that there was coolant that leaked all over the engine. I don't know where it came but I washed it off (should have snapped a pic!), so today I will try to drive around a bit and pop the hood again to see where it is coming from.

I'm guessing it leaked from one of the hoses or something. I recently got everything changed (timing belt, water pump, new radiator) about 3k miles ago or so.

I took her offroading earlier in the week two days in a row as well and went through some rough terrain in 90+ degree heat.

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Lexus RX 2004-09 :: Coolant Leak - Small Amount Of Red Fluid Leaked Out Of Radiator

I have a 04' RX 330 with 92k. It has small radiator leak. If you are standing in front of the car and look below the fan on the left side of the radiator you can see a small amount of red fluid that has leaked out of the radiator. However, the leak isn't big enough that I ever have to add coolant I just top it off when I get the oil changed. Also it doesn't puddle on the pavement when parked.

The only thing I really notice is that my windows tend fog abit easier now so I assuming the moisture must be making its way into the ventalation somehow. My mechanic said its about a $700 repair. My question should I fix it and is $700 reasonable. Also I've never had the timing belt replaced would it make since do have this done at the same time as the radiator. How long will it take before it becomes a major problem instead of a minor annoyance?

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Lexus ES 2007-12 :: ES350 Water Pump Leaked Out All Of Coolant

Bought an 07 ES350 from a reputable dealer in March 2013. Had 65k miles when i got it. Had it about 6 wks and 2400 miles and noticed some reddish leaks under the engine. Thought it was trans fluid. I was driving to the dealership to get it fixed - when i noticed the temp guage up near the red zone and the heater (was 39 degrees F out) was blowing cold air. I started to get in the right lane - when all of the lights on the dash lit up - including the "check engine" light. I was able to get over - i think the car actually stalled.

Anyway - after a tow to the dealer - it was the water pump had leaked out "all" of my coolant. At 67k miles having a water pump fail on a Lexus? Did i do permanent damage to the engine?

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Ok so I have an 04 Jetta 2.0 and lately it's been overheating on me. The first time it started overheating was because my radiator was cracked and leaked out all my coolant, I swapped the radiator everything was fine for a while. The second time I started overheating, I saw my primary fan was bad it wasn't spinning at all, I swapped it everything was fine for another while. I also changed the coolant temp sensor, it wasn't bad it's just because the coolant flange was leaking coolant, so I changed it a long with the O-Rings and sensor. I also changed the thermostat just incase that was the problem but it wasn't.

I don't think the fans are turning on by them selves when they have too, but either way the car still overheats when I turn on the fans manually with the A/C. I'm not sure if the coolant is circulating, as the car only begins to overheat when I come to a stop and it idles. I have a feeling it's the water pump but I wanna be sure it is before I change it. What it could be? Things that I should check for that usually go out?

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What could be the cause of this? When I let the car stay for a while, the AC did kick back on, but only for a few moments and the thermometer kept on climbing again until I turned the car off. The fan is blowing, I can hear it, but it is obviously not cooling the engine off appropriately.

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I was underneath my car yesterday (09 ES 350, 60k miles) doing an oil change and noticed oil and grease caked to the back of each side of the firewall and running down over the axles. I also found a small pool of transmission fluid in the splash pan beneath the transmission fluid cooler. It appears fluid is escaping past the factory "pinch clamps." .

I plan to replace the pinch clamps with the screw/bolt style adjustable ones. My thoughts are that maybe the WS ATF is too viscous for these pinch clamps, or that maybe under heavy load there's too much pressure for them to withstand leaking/seeping. I'm estimating I may have lost up to 1/3 of a quart up to this point, but can't be for sure. I thought it might be engine oil, but found the back of the engine to be dry and my VVTI return line is metal and not leaking. I'll definitely be checking the fluid level soon, although the car is running and shifting fine.

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Unfortunately this did not fix the issue the noise is still there. It's most prevalent when you turn but the noise also picks up a little when you hit the gas. I have checked for hose leaks but cannot find one. My next step is to have the steering pump changed out. While the mechanics in there I am going to have him check the hoses/pulleys really close and look around for another leaks anywhere. Noise is annoying but the steering works fine.

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Lexus GX 2004-09 :: Coolant Level Seems To Be Going Down

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I cleaned it up and warm up the engine and did some revvings and all seems well. No leak whatsoever. Weird. Do they check the coolant at the oil change service? Maybe they overfilled my reservoir tank?

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[URL]....

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Coolant loss, presumably from evaporation? This was after 3 years of operation/48,000 km or 30,000 mi.

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