Humming/buzzing noise from under hood with engine off.
I have 2008 Toyota Rav4, 4 Cyl, with
100,000 miles. For the past couple
months, I have experienced issues with
a humming/buzzing noise (similar to
the sound of the old GM seatbelt
signal, but at a much lower volume)
coming from the engine (don’t know
exactly where), but the engine is OFF,
with NO key in the ignition. The
problem is intermittent which makes
diagnosing difficult. Sometimes the
check engine and oil pressure lights
are on BEFORE putting the key in the
ignition. Other times, once I put the key
in the ignition, then all of the noted
lights illuminate. This issue causes the
battery to drain to the point of not
being able to start the car.
Just wondering if you were ever able to diagnose the problem. We just bought my father-in-law’s 2007 RAV4 and it’s doing the same exact thing.
I have 168,000 miles on 2015Rav4 Today I heard a buzzing sound under hood while driving No warning lights, No leaking fluid I smelled a light antifreeze smell no leaks I was told I don’t have a timing belt Thanks Dilthra
Hi. Any info on this??? Same exact symptom on 2008 Rav 4!!!
Me too. Light beeping sound when I turned off the car. My battery may drain if I do not find a way to turn it off.
2019 Rav 4, same buzzing noise, off and on, mostly driving around 25 mph. Wife's car, driving me nuts to find noise. Garage has no clue.
Sounds like CV joint or wheel bearing may be bad.
I have a 2008 Rav4 and my car just stated to make a weird humming noise as well. It starts immediately after turning it on. I can't figure out what it is either..
Same happened to my 2007, it killed the new battery. I found that if I pulled the efi msin fuse out, the noise stops. So I think its the fp relay corrupts. However Ive been looking for the relay location but no luck. Dobt kno where. So for now I have to pull the fuse everytime I park to save the battery then plug in back to start the car.
I have the same problem right now 2006 toyota rav4 just had the water pump tensioner pulley and belt done and got it back from the shop and it's doing the same exact thing .with the key off and tge doors locked the oil lamp and the check engine light are on ...very dim but they are on and it kills the battery if I don't disconnect it .any help would be greatly appreciated. Duffansay555@gmail.com
On my 2006 I unplugged the wire on the passenger side kick plated and the 3 small prongs were all corroded so I cleaned them carefully with a toothbrush and dried everything with a hair dryer after then I applied die electric Grease and recommended everything and problem solved I hope this helps someone !!!
