It sounds like the car is in high gear but speed is low, like a gurgling sound. I can reproduce the sound pretty easily, It happens around 2k RPM and not while the car is standing still, i took the car to a mechanic nearby and he said it was the belt and changed it, he also changed idler bearing but it didn't fix at all so i searched online myself and found out my car transmission fluid needed changing, so after some convincing from a friend, i decided to do it but the sound still remains. Please help me out here.
@imperator I live in Pakistan and i don't think they offer this.
" 3 years or 100,000 KM (whichever comes first)." for general warranty. Not sure about engine+transmission.
You car should have come with a warranty brochure.
https://toyota-indus.com/faq/
Are you having any drivability issues with the car besides the noise? Has the noise always been there since you've owned the vehicle or did it recently start? It appears your vehicle has a K120 CVT transmission with a physical launch gear for 1st gear. You're saying the noise occurs when the car shifts out of the launch gear to the CVT belt drive?
@oskool There is no issue other than the sound and the noise started recently, it wasn't always there. I don't know that much about cars or transmissions but yes it only happens in the starting gear.
@Ginko "It sounds like the car is in high gear but speed is low, like a gurgling sound." Please expand on what high gear is. Do you mean 5th gear or overdrive?
@oskool no, It's like when car struggles to gear up and the issue only happens with the starting gear at parking lot speed.
@Ginko I'm not sure what the gurgling sound could be. Are you sure the sound is coming from the transmission? Have you checked the radiator fluid level recently? Make sure the engine is cool before opening the radiator cap!
@oskool The reason why i think it's transmission is cuz i don't hear the sound when i manually shift gears.
Another thing when i switch to manual the sound doesn't happen.
@ginko how many miles does the car have? It kind of sounds like the CVT belt is slipping if the engine rpms are high but the car is moving slow.
It's almost 40k miles. It only makes the sound when switching from first to second gear(though i am not sure if it really is the second gear but it happens on low speed) and around a certain rpm like i can hold around that rpm and the noise will keep coming.