trying to get some insight on what the problem might be when the ABS, T/C and Hill Decent light keeps coming on....any suggestions greatly appreciated....

 

Sure, how about what year, how many miles on it and what have you done so far to fix the problem?

 

Also need to know if they are always on, or if they come and go: when they come and go: at start-up, while driving, while braking, etc. Are your wheels covered in brake dust?

 

Do a search for the "3 amigos"...and invest or rent an ABS code reader (not OBDII)...I think bosshogt on here has one for rent.

 

same problem with the 3 lights on, it has gone on then off after restarting just want to know where to start

 

seriously, this is NOT rocket science

1) do a search here first; this has been covered so many times it is ridiculous
2) pull your codes and post them here (once we have the codes, our collective knowledge will help tremendously)
3) or make trip to the dealer; this choice will probably cost a $hitload of money...but it will get fixed.

 

they are called the 3 amigos, they indicate a problem with something in the abs, downhill, or traction controll system, warning you that the car is now operating at a reduced abs/tc capability or not at all. there are 2 very common causes, the first is a faulty abs shuttle valve, a piece mounted under the abs box in the drivers side engine bay... break fluid tends to eat its way into the sensore and short it out, or sometimes are lucky and its just leaky power steering fluid leaking into the wire harness lead back from it. start there, its free. second common cause are faulty abs wheel speed sensors i believe, break dust, water, dirt, grime etc... sometimes they can be cleaned out, sometimes the wires are snagged if you offroad the in brush etc... check there second. otherwise, there are dozens of other possible, but nor probably causes for this... best way like everyone else said, is to get a scanner and read the fault codes. for some reason i believe the lights stay on once triggered reguardless if the fault still remains unlike a check engine light, unless specifically cleared from the dealer, or with an "ABS Amigo" scan tool available third party sale. someone will surely chime in if i am wrong of missed something, but def search the forum for 3 amigos, there is a metric ****tonne out there on it sometimes its a simple grounding issue, sometimes, your just ****ed out of a abs modulator hahaha