rolling back then a MASSIVE CLUNK

[mrfpv Junior Member Find all posts View Profile Close mrfpv]

hey guys, we have a driveway that is on a hill, sometimes when we are waiting for the garage door to open, the prado rolls back a tad and all of a sudden there is a MASSIVE clunk and i think the traction control light starts blinking and a beeping noise. what is with that?

Jared

[mrfpv Junior Member Find all posts View Profile Close mrfpv]

Bloody hell ?

Christ only knows Jared ??

Cheers,

haha its not a pretty sound. i literally S*** myself when i hear it.

[cjd Member Find all posts View Profile Close cjd]

Your wife isn't missing a Hyundai Getz by any chance, or a dog with a high pitched bark?

[Chippy Addicted PP Member Find all posts View Profile Close Chippy]

Hey Jared

If I read this right you are driving up your driveway towards the garage door ???

While you wait for the door are you holding the car, on the slope, with the brake or the throttle ???

No obvious reason leaps to mind .... and I'd go with Matt on this one ... and take it Toyota to sort out.

Cheers
Chippy

[joey Avid PP Poster! Find all posts View Profile Close joey]

sounds like nasty buisiness to me

bring on the warranty

[viper Junior Member Find all posts View Profile Close viper]

Its your hill start assist engaging.

[xvprado Senior Member Find all posts View Profile Close xvprado]

viper got it
Read the manual, maybe 8)

[gwatts21 Member Find all posts View Profile Close gwatts21]

Have to agree with viper, it is most likely the Hill Start Assist. That is certainly what the beeping is in mine and the VSC light should start flashing as well. It will hold the car for a few seconds using the brakes and then let it roll back.

Hope this helps.

Cheers

Gazza

[mrfpv Junior Member Find all posts View Profile Close mrfpv]

thanks everyone. i will get it looked at cause of the clunk but the hill start does sound about right. thanks everyone

Jared

[mjrandom Out of control poster! Find all posts View Profile Close mjrandom]

Jared the hill assist isn't a MASSIVE clunk. It's just the same as the ABS working. Think it is worth a trip to the dealer anyway (the hill assist can be easily tested on just about any hill start) but if you want to check yourself stop part way a fairly steep hill (making sure no one is behind) and let the car roll back. If it is the same clunk then it is not a problem.

[TimJNB Lurker Find all posts View Profile Close TimJNB]

Re: rolling back then a MASSIVE CLUNK

... the prado rolls back a tad and all of a sudden there is a MASSIVE clunk and i think the traction control light starts blinking and a beeping noise. what is with that?

Nothing wrong.

It's the computer sensing that you're rolling back and engaging the brakes.

The sound is pretty harsh, especially seeing as it happens at a time the vehicle is essentially stationary and there's no road noise or engine noise.

The clacking sound is the hydraulics of the ABS/traction control system as it applies the brakes.

If you go out and get cross-axled you'll hear the same sound as the traction control system does its thing.

Tim

[sparkie Lurker Find all posts View Profile Close sparkie]

I had some strange sort pulsing clicking sounds while on my driveway. The car was in neutral and started rolling back.

It was on the driveway which is sort of steep.

I let off the brake and it started rolling back and there were clicking sounds.

?

all is well since then

[rovert Lurker Find all posts View Profile Close rovert]

haha its not a pretty sound. i literally S*** myself when i hear it.

Well that should wipe right off your leather seats.

[crowey Member Find all posts View Profile Close crowey]

I had some strange sort pulsing clicking sounds while on my driveway. The car was in neutral and started rolling back.

It was on the driveway which is sort of steep.

I let off the brake and it started rolling back and there were clicking sounds.

?

all is well since then

My front cv joints/hubs click once each when i put it into reverse and move about 1-2 metres. They have always dont it and to me sounds like the same thing that has happened to you. Sounds quite loud in the garage with the windows down..
As for the other problem, my car doesnt clunk when it rolls back, but it does stop and apply the brakes pretty quickly by itself making al sorts of random noises and beeps.. the brake pedal also locks up