User Manual - Page 149

For 2021 WRANGLER.

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STARTING AND OPERATING 147
(Continued)
NOTE:
Vehicle speeds shown in the chart above are for
2WD High and 4WD High only. Vehicle speeds in
4WD Low would be significantly less.
DOWNSHIFTING
Moving from a high gear down to a lower gear is
recommended to preserve brakes when driving
down steep hills. In addition, downshifting at
the right time provides better acceleration when
you desire to resume speed. Downshift
progressively. Do not skip gears to avoid
overspeeding the engine and clutch.
NOTE:
The manual transmission shift system is
equipped with gear blockers, which will prevent
downshifts into FIRST or SECOND gear above
certain vehicle speeds.
Manual Transmission Shift Speeds in MPH (KM/H)
Engine Speeds 1 to 2 2 to 3 3 to 4 4 to 5 5 to 6
3.6L
Accel. 15 (24) 24 (39) 50 (80) 65 (104) 70 (112)
Cruise 10 (16) 19 (31) 40 (64) 55 (88) 65 (105)
WARNING!
Do not downshift for additional engine brak-
ing on a slippery surface. The drive wheels
could lose their grip, and the vehicle could
skid.
CAUTION!
Skipping gears and downshifting into lower
gears at higher vehicle speeds can damage
the engine and clutch systems. Any attempt
to shift into lower gear with clutch pedal
pressed may result damage to the clutch
system. Shifting into lower gear and
releasing the clutch may result in engine
damage.
When descending a hill, be very careful to
downshift one gear at a time to prevent
overspeeding the engine which can cause
engine damage, and/or clutch damage,
even if the clutch pedal is pressed. If
transfer case is in low range the vehicle
speeds to cause engine and clutch damage
are significantly lower.
Failure to follow the maximum recom-
mended downshifting speeds may cause
the engine damage and/or damage the
clutch, even if the clutch pedal is pressed.
Descending a hill in low range with clutch
pedal pressed could result in clutch
damage.
CAUTION! (Continued)
4
21_JL_OM_EN_USC_t.book Page 147
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