Vehicle Modifications/Alterations

WARNING!
Any modifications or alterations to this vehicle could seriously affect its roadworthiness and safety and may lead to a accident resulting in serious injury or death.

    See also:

    Hill Start Assist (HSA) — If Equipped
    When on is selected, the HSA system is active. Refer to “Electronic Brake Control System” in “Starting And Operating” for system function and operating information. To make your selection ...

    Lubricant Selection
    Use only manufacturer’s recommended fluid. Refer to “Fluids, Lubricants, and Genuine Parts” in “Maintaining Your Vehicle” for further information. ...

    Axles and Transfer Cases
    The Jeep Wrangler is now available with more axle gear ratios, allowing customers to optimize fuel economy and/or vehicle capability. Wrangler is available with 3.21, 3.73 or 4.10 ratios depending ...