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Old 03-11-2012, 04:18 PM   #1
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function of switch

Picked up my new unlimited sport 4 door yesterday. Loving it. However for the life of me, I dont know what the switch in between the hazard and esp switches does. The one with the jeep going downhill and squiggly lines. Please let me know. I really feel dumb for having to ask this, but I kinda have to laugh at the same time. Thanks in advance, loving this site..Mike

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Old 03-11-2012, 04:26 PM   #2
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Quote:
Originally Posted by scapegoat32
Picked up my new unlimited sport 4 door yesterday. Loving it. However for the life of me, I dont know what the switch in between the hazard and esp switches does. The one with the jeep going downhill and squiggly lines. Please let me know. I really feel dumb for having to ask this, but I kinda have to laugh at the same time. Thanks in advance, loving this site..Mike
HSA

Hill start assist?

Just guessing ... My 07 doesn't have it.

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Old 03-11-2012, 04:29 PM   #3
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it's an automatic transmission thing. its the hill decent button. aim your jeep down a craggy hill, push button, enjoy popcorn.

really wish I had it in my manual, it does seem to make goes down steep hills a breeze
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Old 03-11-2012, 04:29 PM   #4
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Sounds like hill descent control
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Old 03-11-2012, 04:30 PM   #5
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Quote:
Originally Posted by scapegoat32 View Post
Picked up my new unlimited sport 4 door yesterday. Loving it. However for the life of me, I dont know what the switch in between the hazard and esp switches does. The one with the jeep going downhill and squiggly lines. Please let me know. I really feel dumb for having to ask this, but I kinda have to laugh at the same time. Thanks in advance, loving this site..Mike
That's actually your ESC button (Electronic Stability Control).

Turn it off in deep snow and sand when wheeling.
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Old 03-11-2012, 04:42 PM   #6
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Electronic Stability Control...

29. Electronic Stability Control (ESC) OFF Indicator Light — If Equipped This light indicates the Electronic Stability Control (ESC) is off.

Electronic Stability Control (ESC)
This system enhances directional control and stability of the vehicle under various driving conditions. The ESC corrects for over/under steering of the vehicle by applying
the brake of the appropriate wheel to assist in counteracting the over/under steer condition. Engine power may also be reduced to help the vehicle maintain
the desired path. ESC uses sensors in the vehicle to determine the vehicle
path intended by the driver and compares it to the actual path of the vehicle. When the actual path does not match the intended path, ESC applies the brake of the appropriate
wheel to assist in counteracting the oversteer or understeer condition.
• Oversteer - when the vehicle is turning more than appropriate for the steering wheel position.
• Understeer - when the vehicle is turning less than appropriate for the steering wheel position.
The “ESC Activation/Malfunction Indicator Light” (located in the instrument cluster), starts to flash as soon as the tires lose traction and the ESC system becomes active.
The “ESC Activation/Malfunction Indicator Light” also flashes when TCS is active. If the “ESC Activation/Malfunction Indicator Light” begins to flash during acceleration,
ease up on the accelerator and apply as little throttle as possible. Be sure to adapt your speed and driving to the prevailing road conditions.

Traction Control System (TCS)
This system monitors the amount of wheel spin of each of the driven wheels. If wheel spin is detected, brake pressure is applied to the slipping wheel(s) to provide enhanced acceleration and stability. A feature of the TCS system functions similar to a limited slip differential and controls the wheel spin across a driven axle. If one wheel on a driven axle is spinning faster than the other, the system will apply the brake of the spinning wheel. This will allow more engine torque to be applied to the wheel that is not spinning. This feature remains active even if TCS and ESC are in either the “Partial Off” or “Full Off”
modes. Refer to “Electronic Stability Control (ESC)” in this section for further information.

etc.

That's my guess, ESC.

Cheers,
BobH
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Old 03-11-2012, 04:45 PM   #7
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Quote:
Originally Posted by kjeeper10

HSA

Hill start assist?

Just guessing ... My 07 doesn't have it.
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Old 03-11-2012, 04:49 PM   #8
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Quote:
Originally Posted by kjeeper10 View Post
OP's got a manual. You don't.
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Old 03-11-2012, 04:54 PM   #9
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Quote:
Originally Posted by kbwwolf View Post
OP's got a manual. You don't.
Which reminds me:

.pdf version of owner's manual, courtesy of UpHillBill:

My Jeep: Jeep Owners Service Manuals - 4x4 SUVs, Sports Utility Vehicles, Off Road

Just select year, model, manual type, and you've got a much more usable document. Searchable, etc.

And if you want something you chock a wheel with:

Free PRINTED owner's manual....

See post #26 for the current phone # to call. It'll take about a week or so to get em. Much better than that annoying, futuristic George Jetson CD thing. I threw mine away.
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Old 03-11-2012, 05:28 PM   #10
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I do have a manual but ESP/lockers/sway disco Is all I have (07)
Only other button I heard of it HSA

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Old 03-11-2012, 06:13 PM   #11
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Quote:
Originally Posted by kjeeper10 View Post
I do have a manual but ESP/lockers/sway disco Is all I have (07)
Only other button I heard of it HSA

I meant he had a manual for a '12, yo.

No HSA button on mine, either. It's done through the EVIC. For models w/out an EVIC, gotta do a steering wheel cha-cha.
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Old 03-11-2012, 06:29 PM   #12
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Yeah, HSA started in 09 and doesn't have a button.
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Old 03-11-2012, 07:14 PM   #13
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Sounds like Hill Descent Control (HDC) to me.
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Old 03-11-2012, 07:55 PM   #14
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X2^^
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Old 03-11-2012, 08:15 PM   #15
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Only on auto's ^^

He has a manual
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Old 03-11-2012, 08:15 PM   #16
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Quote:
Originally Posted by Goughy View Post
Sounds like Hill Descent Control (HDC) to me.
Yep
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Old 03-11-2012, 08:17 PM   #17
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It is Hill Descent Control. I used it today in 4 lo going down a hill with my auto Rubi. It's awesome.

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