Abs problem

[Northbynortheast]

Hello all,

I’m looking for a little help with a suspension? Problem. I have a 2015 Tacoma crew cab non trd, Four Wheel Fleet camper. Dobinsons heavy suspension front/rear and airbags. Airbags inflated to 20 or so pounds if loaded for a trip. The problem I’m having is that when going through some turns at a safe pace, I can hear the “hum” of anti rollover engaging and sometimes the antilock brakes will engage without my foot on the brake. I’ve had the rig looked at by 4x4 specialists who say that there’s nothing wrong with sensors. Best guesses to solve the problem are; switch to lighter springs in the front, add a rear anti sway bar. Anyone out there have a similar experience? Ideas?

 

[Cottonww]

What do you have for tires? I recommend 10 ply tires like BF Goodrich AT's.

Bill

 

[Vic Harder]

no experience, but curious. If you are thinking of adding a rear anti-sway bar, and the rollover protection is kicking in, are you getting sway while cornering?

 

[Northbynortheast]

Running BF Goodrich K02’s 10ply. No odd sway or abnormal body roll that I sense and definitely not feeling like I’m going into any given turn too fast. It’s pretty unnerving when the brakes engage.

 

[Vic Harder]

Dumb question, but does it do this without the camper mounted?

 

[michelle_east_county]

Check w dealer or good independent shop before changing anything further. Accelerometers in chassis computers (like in your smartphone) plus its readings of steering angles and individual wheel rotation may be causing problems with output to various driver nanny systems.

 

[JHanson]

We had this happen with our 2012 Tacoma and FWC while it was under warranty. Local dealers refused to do anything about it since they couldn't replicate it driving around the block. We finally got hold of a knowledgable supervisor in . . . Reno, maybe? who knew exactly what it was. They just need to recalibrate the settings on the trailer yaw sensor. Be persistent and move up the chain of command until you find the person who knows about this.

We did not have to change anything in the suspension; it was all done at programming level.

 

[PaulT]

Instead of calling it an ABS problem which might distract a technician down the path of troubleshooting the brakes, try calling it a stability management problem. They apparently use the same sensors & actuators so the technician could be steered into a different troubleshooting path.

Just a thought. \_(ツ)_/

Paul

 

[ntsqd]

Jonathan's advice is one that I was given years ago, "If you're being told No keep going up the totem pole until someone says Yes." It has worked in many and varied situations.