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lumberjack357

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Mike, in the Sport you only get the 220 if you order the limited slip diff option. If you have the 220, you should also have the LSD. It was a $595 option on my 2018 Sport Unlimited. Auto or manual trans is irrelevant for this option. The 220 is a Dana 44, if this helps. Peace.
This is incorrect, the M220 is standard equipment on all manual Wranglers, regardless of LSD or not. I believe this changed at the beginning of MY19. With the auto you are correct, M220 with LSD only. Obviously, the Rubicon is still the M220 wide version regardless of transmission.
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Graham1298

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It’s hill decent and works only in 4L as I understand it. Uses engine controlled braking so you don’t burn out the break pads.
 

joshg

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someone said you use manual-mode transmission + and - to control speed while in hill descent mode, someone else said you use cruise+/-. Can you use either of those interchangeably? Or do they maybe change the speed interval by different amounts?
 

jbozz

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Activating HDC Once HDC is enabled it will activate automatically if driven
down a grade of sufficient magnitude. The set speed for
HDC is selectable by the driver, and can be adjusted by using
the gear shift +/-. The following summarizes the HDC set
speeds: HDC Target Set Speeds • P = No set speed. HDC may be enabled but will not activate • R = 0.6 mph (1 km/h) • N = 1.2 mph (2 km/h)
• D = 0.6 mph (1 km/h) • 1st = 0.6 mph (1 km/h) • 2nd = 1.2 mph (2 km/h) • 3rd = 1.8 mph (3 km/h) • 4th = 2.5 mph (4 km/h) • 5th = 3.1 mph (5 km/h) • 6th = 3.7 mph (6 km/h) • 7th = 4.3 mph (7 km/h) • 8th = 5.0 mph (8 km/h) • 9th = 5.6 mph (9 km/h) – If Equipped NOTE: During HDC the +/- shifter input is used for HDC target
speed selection, but will not affect the gear chosen by the
transmission. When actively controlling HDC the transmission will shift appropriately for the driver-selected set speed
and corresponding driving conditions. Driver Override The driver may override HDC activation with throttle or
brake application at anytime.

someone said you use manual-mode transmission + and - to control speed while in hill descent mode, someone else said you use cruise+/-. Can you use either of those interchangeably? Or do they maybe change the speed interval by different amounts?
another nice feature l
Hill Start Assist (HSA) The HSA system is designed to mitigate roll back from a
complete stop while on an incline. If the driver releases the
brake while stopped on an incline, HSA will continue to hold
the brake pressure for a short period. If the driver does not
apply the throttle before this time expires, the system will
release brake pressure and the vehicle will roll down the hill
as normal. The following conditions must be met in order for HSA to
activate: • The feature must be enabled. • The vehicle must be stopped. • Park brake must be off. • Driver door must be closed. (If the doors are attached, then
the door must be closed. If the doors are detached then the
driver's seatbelt must be buckled.) • The vehicle must be on a sufficient grade. • The gear selection must match vehicle uphill direction (i.e.,
vehicle facing uphill is in forward gear; vehicle backing
uphill is in REVERSE gear).
• HSA will work in REVERSE gear and all forward gears.
The system will not activate if the transmission is in PARK
or NEUTRAL. For vehicles equipped with a manual transmission, if the clutch is pressed, HSA will remain active.
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