ottopeters37
Avensis Coolant Loss
Summary of the thread
A 2000 Toyota Avensis was experiencing constant coolant loss, with no visible leaks and a check engine light on. Initial checks of the radiator hoses and coolant reservoir showed no obvious issues, and there were no puddles under the car. A suggestion was made to inspect the radiator cap for proper sealing and to consider a pressure test for internal leaks. Ultimately, the problem was identified as a small leak in one of the hoses, which was replaced, resolving the issue.
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4 comment(s)
ottopeters37 (community.author)
Radiator hoses look okay at first glance. Coolant reservoir seems fine too. No puddles. How would I check the radiator cap? Just look for obvious damage?
emilflame5
Yeah, check the cap for damage but it's tricky. Sometimes they look fine but don't hold pressure properly. If you're not seeing any external leaks, it could be something internal, which is bad news. Honestly, sounds like you're past simple fixes. I'd get it to a workshop to have them pressure test the system. I bet is a coolant leak and it cost me like 52€ to fix it
ottopeters37 (community.author)
Alright, thanks for the help. I got it checked out. Turns out it was a small leak in one of the hoses. Replaced it and topped up the coolant. All good now.
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TOYOTA
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AVENSIS
emilflame5
Dude, I had a similar thing with my Avensis, though mine is a bit newer, maybe 2005? I was constantly topping up the coolant. Have you checked the usual suspects like the radiator hoses and the coolant reservoir for cracks? Also, the radiator cap can cause issues if it's not sealing properly, leading to coolant leaks you might not easily spot. Are you seeing any puddles under the car after it's been parked?