Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Transmission Range Switch Replacement
2008 Acura TSX L4-2.4LSECTION Transmission Range Switch Replacement
Transmission Range Switch Replacement
1. Raise the vehicle on a lift, and make sure it is securely supported.
2. Shift to N.
3. Remove the transmission range switch cover.
4. Disconnect the transmission range switch connector.
5. Remove the transmission range switch.
6. Make sure the selector control shaft is in the N position. If necessary, move the shift lever from P to N.
NOTE: Do not use the selector control shaft to adjust the shift position. If the selector control shaft tips are squeezed together it will cause a faulty signal or position due to play between the selector control shaft and the switch.
7. Align the cutouts (A) on the rotary-frame with the neutral positioning cutouts (B) on the transmission range switch (C), then put a 2.0 mm (0.08 in.) feeler gauge blade (D) in the cutouts to hold the switch in the N position.
NOTE: Be sure to use a 2.0 mm (0.08 in.) blade or equivalent to hold the switch in the N position.
8. Install the transmission range switch (A) gently on the selector control shaft (B) while holding it in the N position with the 2.0 mm (0.08 in.) blade (C).
9. Tighten the bolts on the transmission range switch while you continue to hold the N position. Do not move the transmission range switch when tightening the bolts. Remove the feeler gauge.
10. Connect the connector securely, then install the transmission range switch cover (A).
11. Turn the ignition switch to ON (II). Move the shift lever through all positions, and check the transmission range switch synchronization with the A/T gear position indicator.
12. Check that the engine will starts in P and N, and does not start in any other shift lever position.
13. Check that the back-up lights come on when the shift lever is in R.
14. Allow the front wheels to rotate freely, then start the engine, and check the shift lever operation.
1. Raise the vehicle on a lift, and make sure it is securely supported.
2. Shift to N.
3. Remove the transmission range switch cover.
4. Disconnect the transmission range switch connector.
5. Remove the transmission range switch.
6. Make sure the selector control shaft is in the N position. If necessary, move the shift lever from P to N.
NOTE: Do not use the selector control shaft to adjust the shift position. If the selector control shaft tips are squeezed together it will cause a faulty signal or position due to play between the selector control shaft and the switch.
7. Align the cutouts (A) on the rotary-frame with the neutral positioning cutouts (B) on the transmission range switch (C), then put a 2.0 mm (0.08 in.) feeler gauge blade (D) in the cutouts to hold the switch in the N position.
NOTE: Be sure to use a 2.0 mm (0.08 in.) blade or equivalent to hold the switch in the N position.
8. Install the transmission range switch (A) gently on the selector control shaft (B) while holding it in the N position with the 2.0 mm (0.08 in.) blade (C).
9. Tighten the bolts on the transmission range switch while you continue to hold the N position. Do not move the transmission range switch when tightening the bolts. Remove the feeler gauge.
10. Connect the connector securely, then install the transmission range switch cover (A).
11. Turn the ignition switch to ON (II). Move the shift lever through all positions, and check the transmission range switch synchronization with the A/T gear position indicator.
12. Check that the engine will starts in P and N, and does not start in any other shift lever position.
13. Check that the back-up lights come on when the shift lever is in R.
14. Allow the front wheels to rotate freely, then start the engine, and check the shift lever operation.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.