Turn Signal Switch

This procedure replaces the turn signal/multifunction switch located in the steering column of a 2007 Ram 3500, restoring proper turn signal, hazard light, wiper, and cruise control operation.

Warnings

Tools required

Parts

• Turn signal/multifunction switch assembly × 1 — Use OEM specification (Mopar 5143455AB or equivalent)
• Steering wheel retaining nut × 1 — Reuse unless damaged

Preparation

1. Park vehicle on level surface and set parking brake
2. Turn ignition to OFF position and remove key
3. Turn front wheels to straight-ahead position
4. Disconnect negative battery terminal and wait minimum 2 minutes for airbag system capacitor discharge
5. Position driver's seat fully rearward for working clearance

Procedure

1. 1

   Remove lower steering column covers
   Using a Phillips screwdriver, remove the two screws securing the lower steering column shroud. Tilt the lower shroud downward and remove it from the column. Remove the upper shroud by lifting upward and pulling away from the column.
2. 2

   Remove driver's side knee bolster
   Locate the knee bolster panel below the steering column. Remove the Phillips screws securing the panel (typically 4-6 screws). Carefully pull the panel away from the dash and disconnect any electrical connectors if equipped with a courtesy light. Set panel aside.
3. 3

   Remove steering wheel retaining nut
   Using a socket wrench, remove the large retaining nut in the center of the steering wheel (verify correct socket size against FSM). Note: on airbag-equipped columns the airbag/driver module must be removed to access this nut. Do not discard this nut. Mark the steering wheel position relative to the shaft with a marker or tape for proper alignment during reassembly.
4. 4

   Remove steering wheel
   Install the steering wheel puller according to tool manufacturer's instructions. Apply steady, even pressure to the puller to separate the steering wheel from the splined shaft. Before removing the wheel, remove the driver airbag module from the front of the steering wheel (release its retaining clips/screws per FSM) and disconnect the airbag and horn connectors. Then remove the puller and carefully lift the steering wheel straight off, feeding the clockspring wiring through the wheel. Set steering wheel in a safe location with airbag facing upward.
   ⚠Never strike the steering shaft or wheel with a hammer. Use only a proper puller to avoid damaging the clockspring or shaft splines.
5. 5

   Remove clockspring assembly
   Locate the clockspring (airbag coil) assembly behind the steering wheel. Remove the clockspring retaining fasteners/release the retaining clips (verify fastener type and count against FSM) securing the clockspring to the steering column. Carefully lift the clockspring assembly off the column shaft and disconnect the two electrical connectors on the back side (airbag and horn connectors). Place tape on the clockspring housing to prevent it from rotating out of center position.
   ⚠Do not allow the clockspring to rotate while removed. Keep it taped or locked in the centered position.
6. 6

   Remove wiper/washer switch
   Locate the wiper/washer switch assembly on the left side of the steering column. If your vehicle has an integrated multifunction switch, skip this step. Otherwise, disconnect the electrical connector from the switch and remove the retaining fasteners securing it to the column (verify fastener type and count against FSM). Remove the switch assembly.
7. 7

   Disconnect turn signal switch connector
   Locate the main turn signal switch electrical connector on the right side of the steering column. Press the connector lock tab and disconnect the harness connector from the switch. Note the routing of any wire retaining clips for reassembly.
8. 8

   Remove turn signal switch mounting screws
   Remove the fasteners securing the turn signal switch assembly to the steering column housing (verify fastener type and count against FSM). These screws are typically located on the right side of the column near the switch stalk.
9. 9

   Remove turn signal switch assembly
   Carefully pull the turn signal switch assembly away from the steering column. The switch stalk will slide out of the column housing. If equipped with cruise control buttons on the switch, ensure all wiring is clear before fully removing the assembly.
10. 10

    Install new turn signal switch
    Position the new turn signal switch assembly onto the steering column, aligning the mounting holes. Insert the switch stalk into the column housing opening. Install the two Torx mounting screws and tighten securely. Reconnect the electrical connector to the switch, ensuring the lock tab clicks into place. Verify all wire routing matches the original configuration.
11. 11

    Reinstall clockspring assembly
    Verify the clockspring is centered (rotor should be in middle position with airbag connector facing upward at 12 o'clock). Remove any centering tape. Reconnect the airbag and horn electrical connectors to the back of the clockspring. Position the clockspring onto the steering column shaft with the connectors aligned properly. Install the two Torx screws and tighten securely.
12. 12

    Reinstall steering wheel
    Connect the airbag and horn connectors to the back of the steering wheel. Align the steering wheel with the marks made during removal and slide it onto the splined shaft. Ensure the wheel is fully seated. Install the steering wheel retaining nut and torque to the manufacturer specification (verify exact value in FSM before final tightening; do not rely on an estimated value for this safety-critical fastener).
13. 13

    Reinstall column covers and trim
    Position the upper steering column shroud over the column and press into place. Install the lower shroud and secure with the two Phillips screws. Reinstall the knee bolster panel, reconnecting any courtesy light connectors, and secure with all Phillips screws.
14. 14

    Reconnect battery and test system
    Reconnect the negative battery terminal. Turn the ignition to the RUN position (engine off). Test all turn signal switch functions: left turn, right turn, hazard lights, high beams, low beams, and cruise control buttons if equipped. Verify the airbag warning light extinguishes after a few seconds indicating proper clockspring connection.

Reassembly

1. Ensure all electrical connectors are fully seated with locking tabs engaged
2. Verify clockspring was properly centered before steering wheel installation
3. Confirm steering wheel is aligned straight when front wheels are straight
4. Check that all column covers and trim panels are secure with no rattles

Verification

• Turn ignition to RUN position and verify airbag warning light extinguishes after system self-test (approximately 6-8 seconds)
• Test left turn signal operation with hazard switch off - verify front and rear left signals flash
• Test right turn signal operation with hazard switch off - verify front and rear right signals flash
• Test hazard light function - verify all four turn signals flash simultaneously
• Verify turn signal cancel function works when turning steering wheel back to center
• Test headlight high beam and low beam operation
• Test windshield wiper and washer functions at all speed settings
• If equipped, test cruise control SET, RESUME, and CANCEL functions
• Verify horn operation by pressing center of steering wheel
• Take vehicle for short test drive to confirm all functions operate correctly under normal driving conditions

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