Jeep Wrangler: Electronic Stability Control (ESC) / Selec-Speed Control (SSC) — If Equipped

Jeep Wrangler. Selec-Speed Control (SSC) — If Equipped SSC is intended for off-road driving in 4WD Low only. SSC maintains vehicle speed by actively controlling engine torque and brakes.

SSC has three states:

  1. Off (feature is not enabled and will not activate)
  2. Enabled (feature is enabled and ready but activation conditions are not met, or driver is actively overriding with brake or throttle application)
  3. Active (feature is enabled and actively controlling vehicle speed)

Enabling SSC

SSC is enabled by pushing the SSC switch, but the following conditions must also be met to enable SSC:

  • The driveline is in 4WD Low.
  • The vehicle speed is below 5 mph (8 km/h).
  • The parking brake is released.
  • The driver door is closed.
  • The driver is not applying throttle.

Activating SSC

Once SSC is enabled it will activate automatically once the following conditions are met:

  • The driver releases the throttle.
  • The driver releases the brake.
  • The transmission is in any selection other than PARK.
  • Your vehicle speed is below 20 mph (32 km/h).

The set speed for SSC is selectable by the driver, and can be adjusted by using the gear shift +/-. Additionally, the SSC set speed may be reduced when climbing a grade and the level of set speed reduction depends on the magnitude of grade. The following summarizes the SSC set speeds:

SSC Target Set Speeds

  • 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 mph (8 km/h)
  • 9th = 5.6 mph (9 km/h) — if equipped
  • REVERSE = 0.6 mph (1 km/h)
  • NEUTRAL = 1.2 mph (2 km/h)
  • PARK = SSC remains enabled but not active

NOTE:

  • During SSC, the +/- gear selector input is used for SSC target speed selection but will not affect the gear chosen by the transmission. While actively controlling SSC, the transmission will shift appropriately for the driver-selected set speed and corresponding driving conditions.
  • SSC operation is influenced by Off Road+ drive mode if active. The differences may be notable to the driver as a varying level of aggressiveness.

Driver Override

The driver may override SSC activation with throttle or brake application at any time.

Deactivating SSC

SSC will be deactivated but remain available if any of the following conditions occur:

  • The driver overrides SSC set speed with throttle or brake application.
  • The vehicle speed exceeds 20 mph (32 km/h) but remains below 40 mph (64 km/h).
  • The vehicle is shifted into PARK.

Disabling SSC

SSC will deactivate and be disabled if any of the following conditions occur:

  • The driver pushes the SSC switch.
  • The driveline is shifted out of the 4WD Low.
  • The parking brake is applied.
  • The driver door opens.
  • The vehicle is driven greater than 20 mph (32 km/h) for greater than 70 seconds.
  • The vehicle is driven greater than 40 mph (64 km/h). SSC will exist immediately.

Feedback To The Driver

The instrument cluster has an SSC icon and the SSC switch has a lamp that offers feedback to the driver about the state SSC is in.

  • The cluster icon and switch lamp will illuminate and remain on solid when SSC is enabled or activated. These are the normal operating conditions for SSC.
  • The cluster icon and switch lamp will flash for several seconds then extinguish when the driver pushes the SSC switch but enabled conditions are not met.
  • The cluster icon and switch lamp will flash for several seconds then extinguish when SSC disables due to excess speed.
  • The cluster icon and switch lamp will flash then extinguish when SSC deactivates due to overheated brakes.

WARNING!

SSC is only intended to assist the driver in controlling vehicle speed when driving in off-road conditions. The driver must remain attentive to the driving conditions and is responsible for maintaining a safe vehicle speed.

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