Hitting bump stops - air suspension

[sllimybot Lurker Find all posts View Profile Close sllimybot]

Hello all the Gurus,

I’m often hitting the bump stops in the Prado, today I got to compare the difference with a coil spring version of the car. Wow - mine are huge, no wonder I’m hitting them!
Why would my car have such big ones? Maybe it’s a Japanese import thing, super smooth roads, no speed bumps?
If I replace them with the smaller coil ones am I going to make the airbag explode if I over compress it? Surely not?
The up and down works all good, self levels nicely and goes from normal to H in 20 or 30 seconds (at a guess)

Please show me similar photos of your bump stops on 120’s with airbags.

[sllimybot Lurker Find all posts View Profile Close sllimybot]

The ride height is controlled by sensors which you can adjust. In my case they weren’t the same on either side, so I’ve sent them at maximum height on both sides, raised the rear about 20mm and appears to have provided enough extra air to in turn stiffen the bags enough to prevent bump stoppage.

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

Those big bump stops in the Grande are there to keep the rear end of your car off the axle housing should the airbags fail. Also in the standard Grande, the TEMS shocks have a reasonably long closed length of 386mm to accommodate the TEMS mechanism and longer bump stops will stop the shock bottoming out if the airbag fails.

Here is a picture of what it looks like when your airbag fails, I haven't bothered with a picture of my bumpstops, they are the same as yours.