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Removal WARNING: All vehicles are equipped with gas pressurized shock absorbers which will extend unassisted. Do not apply heat or flame to the shock absorbers during removal or component servicing. Failure to follow these instructions can result in personal injury. CAUTION: Suspension fasteners are critical parts because they affect the performance of vital components and their failure can result in major service expense. They must be replaced with the same part number or an equivalent part if replacement is necessary. Do not use a replacement part of lesser quality or substitute design. Torque values must be used as specified during reassembly to ensure proper retention of these parts. Vehicles equipped with air suspension 1. WARNING: The electrical power to the air suspension system must be turned off prior to hoisting, jacking or towing an air suspension vehicle. Failure to do so can result in unexpected inflation or deflation of the air springs, which can result in shifting of the vehicle during these operations. Turn the air suspension service switch off. All vehicles 2. Raise and support the vehicle. For additional information, refer to Section 100-02. 3. Use the special tool 014-00942 or equivalent to support the rear axle. Vehicles equipped with air suspension 4. WARNING: Do not remove an air spring under any circumstances when there is air pressure in the air spring. Do not remove any components supporting an air spring without exhausting the air. Release the air pressure from the air springs. For additional information, refer to Section 204-05. All vehicles 5. NOTE: Replace shock absorbers individually as required. It is not necessary to replace in pairs. NOTE: To assist in removing the upper attachment on shock absorbers, use a plastic dust tube and place an open end wrench on the hex stamped into the dust tube’s metal cap. For shock absorbers with a steel dust tube, simply grasp the tube to prevent stud rotation when loosening the retaining nut. Remove the shock absorber upper retaining nut, washer and insulator from the stud on the upper side of the frame. 6. Remove and discard the nut. Disconnect the shock absorber lower stud from the mounting bracket on the rear axle assembly. Installation All vehicles 1. To install, reverse the removal procedure. Vehicles equipped with air suspension 2. Inflate the air springs. For additional information, refer to Section 204-05.

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Safety Precautions WARNING: All vehicles are equipped with gas pressurized shock absorbers which will extend unassisted. Do not apply heat or flame to the shock absorbers during removal or component servicing. Failure to follow these instructions can result in personal injury. CAUTION: Suspension fasteners are important parts because they affect performance of vital components and systems and their failure can result in major service expense. A new part with the same part number, or an equivalent part, must be installed if installation is necessary. Do not use a new part of lesser quality or substitute design. Torque values must be used as specified during reassembly to make sure of correct retention of these parts. Never attempt to heat, quench or straighten any suspension part. Install a new part. Always observe the above safety precautions when servicing the vehicle suspension system. Suspension Components Four Door The four door uses a McPherson independent strut rear suspension system consisting of the following components. Four Door Rear Suspension Components

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STRUT/SHOCK ABSORBER CAUTION: Removal 1. With vehicle on floor, remove plastic cap which covers upper strut/shock retaining nuts. Remove strut/shock retaining nuts. Slowly raise vehicle until weight is off spring. Remove bolt which retains lower end of strut/shock absorber to axle beam mount. Raise vehicle until strut/shock can be removed. Place strut/shock assembly in vise. 2. Hold piston rod. Remove strut/shock retaining nut and related components. See Fig. 1 . Remove slotted nut (some models). Remove spacer and coil spring. If coil spring is to be replaced, ensure paint stripe color on replacement spring matches original spring color stripe. Installation 1. Install protective cap and tube onto shock absorber. Install rubber buffer with small end downward. Install snap ring and washer. Place spring into lower seat. Install upper retainer with spacer sleeve. 2. Tighten slotted nut (some models) which retains piston rod. Install upper mounting hardware. Tighten piston rod. To complete installation, reverse removal procedure. Tighten bolts and nuts to specification. See TORQUE SPECIFICATIONS. SUSPENSION ASSEMBLY CAUTION: DO NOT remove both suspension strut/shock absorbers at same time. When removing suspension assembly, add weight to rear of vehicle to prevent tipping due to change in center of gravity.

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DUAL ACTION SYSTEM The suspension system incorporates a rear load leveling system that maintains the vehicle at the proper ride height under varying conditions of vehicle load, and an optional road calibrated suspension ride control system that varies the damping of the shock absorbers between soft and firm. The rear load leveling system uses air springs to support the vehicle weight. The quantity of air in the rear air spring is controlled by the vehicle dynamic module (VDM) to maintain a predetermined vehicle ride height. Each air spring has an air spring solenoid to control air flow into and out of each air spring. The optional ride control system uses four shocks with electronically controlled actuators. The shock actuators are internally mounted on the lower bodies of the front spring and shock assemblies and the rear shocks. The action of the shock actuators is controlled by the VDM. The VDM sends a signal to an appropriate shock actuator which switches to either soft or firm damping. Normally the shock actuator setting is in a soft, luxury car mode. This is done by causing an electric current flow through the actuator, which induces electromagnetic force that moves the shock actuator from a firm to a soft position. When driving situations require, the setting is switched to a firm, high performance control mode. This is done by removing power to the actuator, allowing the shock actuator to return to the firm mode.

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ES250 suspension is MacPherson strut-type independent suspension, consisting of stabilizer with integrated strut bar, lower arm, performance rod and shock absorbers using coil spring and suspension link. LS400 suspension is a double wishbone-type independent suspension consisting of coil spring, shock absorber, stabilizer bar upper and lower wishbone arms. WHEEL BEARINGS ADJUST (ES250) BALL JOINT CHECKING STABILIZER BAR R & I (ES250) WHEEL BEARING, HUB & KNUCKLE ASSEMBLY STRUT ASSEMBLY LOWER CONTROL ARM & BALL JOINT LS400 suspension is a double wishbone-type independent suspension consisting of coil spring, shock absorber, stabilizer bar upper and lower wishbone arms. NOTE: This article covers conventional suspension. Servicing procedures DO NOT apply to electronic-modulated suspensions.