Replace the lower ball joint on a 2012 Tesla Roadster (Lotus Elise-based chassis). The Roadster uses Lotus-derived front suspension, so most procedures and parts mirror the Elise/Exige rather than later Tesla vehicles.

Warnings

Tools required

Parts

• Lower ball joint assembly (Lotus Elise/Tesla Roadster front lower) × 1 — OEM-equivalent lower ball joint for 2012 Tesla Roadster / Lotus Elise front suspension — verify fitment
• Cotter pin for ball joint castle nut × 1 — New cotter pin — never reuse
• Pinch bolt (if disturbed) × 1 — New single-use pinch bolt per OEM specification

Preparation

1. Park on level ground, place transmission in gear (or P on 2-speed/automatic variants), and engage the parking brake.
2. Exit ALL doors with the key fob away from the vehicle. Wait at least 2 minutes for HV systems to fully de-energize, even on this non-HV job.
3. Disconnect the 12V low-voltage battery (located in the front trunk/forward compartment area on the Roadster — refer to owner documentation for exact location on your VIN).
4. DO NOT touch, cut, or pierce ANY orange cable — these are high-voltage and lethal.
5. If at any point you encounter an orange cable, an HV component, or are unsure if a system is de-energized: STOP and consult a Tesla-certified technician.
6. Chock the rear wheels. Loosen the front wheel lug nuts while the vehicle is on the ground.
7. Raise the front of the vehicle using only the manufacturer-specified jacking points and support securely on jack stands rated for the vehicle's weight.
8. Remove the front wheel on the side being serviced.
9. Inspect the upper ball joint, tie rod end, control arm bushings, and CV/half-shaft boot while access is open — document any additional wear before reassembly.

Procedure

1. 1

   Inspect and document suspension state
   With the wheel removed, photograph the lower ball joint, lower control arm, hub carrier (upright), and surrounding fasteners. Note the orientation of any shims or alignment marks. Confirm the failure mode of the ball joint (torn boot, play, seized stud) before disassembly.
2. 2

   Disconnect the sway bar end link (if necessary for access)
   If the sway bar drop link interferes with lower control arm or ball joint access, hold the link's internal shaft with an Allen key and remove the nut. Set the link aside. On reassembly, this fastener is torque-controlled.
   Torque spec

   Sway Bar Link61 Nm (45 lb-ft)
3. 3

   Support the lower control arm
   Place a jack under the lower control arm near the ball joint to support the spring/strut load. Raise just enough to take tension off the ball joint stud — do not lift the vehicle off the stands.
   ⚠The front strut/spring is preloaded. Failing to support the lower arm can cause the arm to drop violently when the ball joint is separated.
4. 4

   Remove the ball joint cotter pin and castle nut
   Straighten and remove the cotter pin from the lower ball joint stud. Discard it — never reuse. Loosen and remove the castle nut. If the stud spins, apply downward pressure on the nut while turning, or use the manufacturer-specified hex socket on the stud tip if equipped.
5. 5

   Separate the ball joint from the upright
   Use a screw-type ball joint separator to press the ball joint stud out of the hub carrier (upright). Avoid pickle-fork separators if the boot is to be saved on a reusable joint, and avoid hammering on the upright — it is an aluminum casting on this chassis and will crack.
   ⚠The Roadster/Elise upright is aluminum. Do not strike it with a hammer; use a press-type separator only.
6. 6

   Remove the lower ball joint from the control arm
   The lower ball joint on this chassis is typically retained to the lower control arm by bolts (Lotus-style bolt-in joint) rather than a press fit. Remove the retaining hardware and withdraw the ball joint. If your specific joint is press-fit or riveted, stop and consult Lotus Elise service documentation before proceeding — procedure differs significantly.
   ℹ️Confirm whether your replacement joint is bolt-in or press-fit before removal; ordering the wrong style is common on this platform.
7. 7

   Clean and inspect mating surfaces
   Clean the control arm seat and the upright's tapered bore. Inspect the taper for galling or ovaling — a damaged taper will not hold the new stud and requires upright replacement.
8. 8

   Install the new lower ball joint to the control arm
   Position the new ball joint and install its retaining hardware. Torque to OEM specification — refer to Tesla Service Manual / Lotus Elise service data for the ball-joint-to-control-arm fasteners; this value is not in the verified torque list provided.
9. 9

   Reconnect the ball joint stud to the upright
   Insert the ball joint stud into the upright's tapered bore. Install the castle nut and tighten to specification, then advance (never back off) the nut to align the next castellation with the cotter pin hole. Install a NEW cotter pin and bend the legs properly.
   ⚠Always tighten — never loosen — to align the cotter pin slot. Backing off the nut reduces clamp load on a critical safety joint.
   Torque spec

   Ball Joint Nut88 Nm (65 lb-ft)
10. 10

    Reconnect the sway bar end link
    Reattach the sway bar drop link. Hold the internal shaft with an Allen key while torquing the nut.
    Torque spec

    Sway Bar Link61 Nm (45 lb-ft)
11. 11

    Re-torque any disturbed control arm fasteners at ride height
    If the lower control arm inner pivot bolts were loosened or removed at any point during access, they must be final-torqued with the suspension loaded at normal ride height to avoid preloading the bushings.
    Torque spec

    Control Arm Bolts165 Nm (122 lb-ft)

Reassembly

1. Reinstall the front wheel and hand-tighten the lug nuts.
2. Lower the vehicle until the tire just contacts the ground, then torque the lug nuts in a star pattern to specification (Wheel Lug Nuts: 136 Nm / 100 lb-ft).
3. Lower the vehicle fully to the ground.
4. With full vehicle weight on the wheels, perform any final torque steps that require ride-height loading (control arm pivot bolts, if disturbed).
5. Reconnect the 12V low-voltage battery.
6. Verify dashboard wakes normally and no suspension/ABS warnings are present.

Verification

• Confirm the new cotter pin is installed and properly bent on the ball joint castle nut.
• Grasp the wheel at 6 and 12 o'clock and rock — there should be zero play at the lower ball joint.
• Inspect the new ball joint boot for proper seating and no pinching.
• Have the front-end alignment checked and adjusted by a shop familiar with Lotus Elise / Tesla Roadster geometry — toe and camber are particularly sensitive on this chassis.
• Road test at low speed first, listening for clunks over bumps and checking that steering is centered and tracks straight.
• Recheck ball joint nut and any disturbed fasteners after the first 100–200 miles of driving.
• Note: while the suspension is apart, this is a good opportunity to verify brake fluid age — Tesla recommends brake fluid replacement every 2 years regardless of mileage, and DOT 3 in a 2012 Roadster is often overdue.

More procedures for this vehicle