2018-Navigator-Owners-Manual

Rear Axle

Trailer Towing The Electronic Limited Slip Differential enhances vehicle stability during trailer tow operation. During high demand trailering events (such as steep grades, high speeds or with a spare tire), the system may provide a warning in the instrument cluster and reduce function or enter a temporarily disabled state. To resume normal function, stop the vehicle in a safe location and allow the unit to adequately cool. Once the system has reached normal operating temperatures, system function will be restored and the Electronic Limited Slip Differential Restored message will be displayed.

The locker mode may automatically disengage based on certain conditions such as vehicle speed. When engaged, a telltale in the instrument cluster will illuminate amber and the switch button will be illuminated. When the speed is exceeded the telltale will turn gray, the locker will be disengaged and be in standby mode until the speed conditions are met. If the eLSD system is faulted and the locker cannot engage, a warning message will be displayed in the instrument cluster and the switch button will flash. Spare Tire If your vehicle is equipped with an Electronic Limited Slip Differential, a spare tire of a different size than the tire provided, should not be used. If a spare tire is installed, a message may appear, indicating the system has disabled automatically or reduced function to prevent system overheat and damage. It is recommended to reinstall the repaired or replaced road tire as soon as possible. When the road tire is replaced, the system will resume normal operation on the next key cycle.

LIMITED SLIP DIFFERENTIAL (If Equipped) The Electronic Limited Slip Differential (eLSD) system directs torque, enabling the vehicle to drive over terrain and road conditions that a conventional axle cannot. The system is active at all times and requires no input from the driver. Note: If your vehicle is not at optimal operating conditions or a system fault is present, a warning may be displayed in the instrument cluster. Depending on the warning, your vehicle may need to be serviced. For more information regarding the

system information messages, See Information Messages (page 126). Locking Function (If Equipped)

The lock button engages ‘locker mode’.

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With the locker engaged, the system electronically locks the differential causing both half shafts to turn at the same rate. This increases traction during off road events.

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Navigator (TB9) Canada/United States of America, enUSA, Edition date: 201708, First Printing