I decided to try out my the hill descent tonight on the way home. Got up to a steep dirt hill and got the hill descent set at ~10 mph and all I heard was this loud grinding. So I stopped and stuck it in neutral and went back to 4hi and coasted the rest of the way down.

I had to get my diff replaced a while back so I'm not sure if there's still something wrong with it or if this is normal? It just sounded like a horrible gear grinding. It's an 08kk ~23k miles.

Thanks

100% positive it wasn't your traction control / abs kicking?

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03 Renegade (Black)
177k miles 3.7L gas - 45RFE
Command Trac / 4.10s
Lift: ft. 790+ rr. JBA4+
The last of the TrailReady Front&Rear Bumpers and TR Rock Rails
Jarhead Offroad light covers
31x10.5R15 RedLetter Grabbers on Blackrock Dunes
L.O.S.T #KD098632

I'm not sure at all. I've never used it and ECS is disabled anytime i'm in 4WD... The GF was with me and got mad at me right away as soon as she heard it since we were on a deserted road in the middle of nowhere with no cell reception.

I think it's a normal thing, found this after googling "how to use hill descent" - http://jeepgarage.org/showthread.php?t=25244

As posted (by me lol) that is a normal sound.

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-Marcus-
2010 Jeep Liberty 4x4 Brilliant Black Crystal Pearl
Current mods: 6000K HID low/hi beams; Passport 9500i; CB radio
Future mods: 2 inch lift; Tint windows; Tail light tint; Duel exhaust; Sound system; Color matched wheels; Smoked headlights; Roof rights; Grille lights

I've used it a few times up the divide...mine sounds like its grinding too...its a universal normal sound. Also, the feature is freakin awesome!

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{SOLD}2008 Jeep Liberty KK
FRONT
OME 2927 Coils
OME NS131 Shocks
REAR
OME 2731 Coils
Skyjacker N8088 Shocks
BFG 245/70/17 Rugged Terrain A/T

The grinding is your ABS applying brakes. Mine sounds like this too. The first time I heard it, I asked the same question on the forum here too.

It's normal, next time tell your GF to keep quiet and enjoy the scenery