Jeep Wrangler: STOP/START SYSTEM — MANUAL TRANSMISSION (IF EQUIPPED) / Possible Reasons The Engine Does Not Autostop
Prior to engine shut down, the system will check
many safety and comfort conditions to see if
they are fulfilled. Situations when the engine
will not stop include (but not limited to):
- Driver’s seat belt is not buckled.
- Outside temperature is less than 10°F
(–12°C) or greater than 109°F (43°C).
- Actual cabin temperature is significantly
different than temperature set on Auto HVAC.
- HVAC is set to full defrost mode.
- Engine has not reached normal operating
temperature.
- Battery discharged.
- When driving in REVERSE.
- Hood is open.
- Transfer case is in 4WD Low or N (Neutral).
- Driver's seat is not occupied or driver’s door
is open.
- Vehicle is at high altitude.
- The vehicle is on a steep grade.
- Forward Gear is engaged.
- Steering angle beyond threshold. (ESS
Models Only).
- System fault is present.
- HVAC set to MAX A/C.
It may be possible for the vehicle to be driven
several times without the Stop/Start system
going into a STOP/START READY state under
more extreme conditions of the items listed
above.
WARNING!
Vehicles with the Stop/Start system will be
equipped with two batteries. Both the main
and the supplemental batteries must be
disconnected to completely de-energize the
12 Volt electrical system...
When the gear selector is in NEUTRAL, the
engine will start when the clutch pedal is
pressed (does not require complete/full pedal
press). The vehicle will go into STOP/START
SYSTEM NOT READY mode until the vehicle
speed is greater than 5 mph (8 km/h)...
Other information:
If you drive on salted or dusty roads or if you
drive near the ocean, hose off the undercarriage
at least once a month.
It is important that the drain holes in the
lower edges of the doors, rocker panels, and
trunk be kept clear and open.
If you detect any stone chips or scratches in
the paint, touch them up immediately...
Your vehicle is equipped with a
maintenance-free battery. You will never have
to add water, and periodic maintenance is not
required.
WARNING!
Battery fluid is a corrosive acid solution and
can burn or even blind you. Do not allow
battery fluid to contact your eyes, skin, or
clothing...