my Acura MDX YF3 (2022-Present) transmission hesitates when shifting what's going on

Symptoms

• Hesitation or delay during gear shifts
• Slipping gears or unexpected downshifts
• Check Engine Light may illuminate
• Erratic acceleration or deceleration
• Potential rough idle when stationary

Diagnostic Steps

1. Scan for Error Codes:

   • Use an OBD-II scanner to check for any stored trouble codes that may indicate transmission issues or related sensors.

2. Check Fluid Levels:

   • Inspect the transmission fluid level with the dipstick (if applicable). Low fluid levels can cause shifting issues.
   • Check the fluid's condition; it should be bright red and clear. Dark or burnt-smelling fluid indicates degradation.

3. Inspect Components:

   • Visually inspect the transmission for leaks, especially around seals and gaskets.
   • Check the condition of the transmission filter (if applicable) and ensure it is not clogged.

4. Test with Multimeter:

   • Use a multimeter to check the electrical connections and sensors related to the transmission, such as the Transmission Fluid Temperature (TFT) sensor and the Transmission Range Sensor.

5. Road Test:

   • Perform a road test to replicate the issue. Note specific conditions under which the hesitation occurs (e.g., cold start, high RPMs).

Repair Instructions

1. Fluid Replacement:

   • If transmission fluid is low or degraded, replace it:
     • Raise the vehicle using jack stands.
     • Remove the transmission pan (if applicable) to drain old fluid.
     • Replace the transmission filter if necessary.
     • Refill with the manufacturer's recommended transmission fluid (consult owner’s manual).

2. Replace Faulty Sensors:

   • If diagnostic tests reveal faulty sensors, replace them:
     • Disconnect the battery.
     • Remove the sensor connector.
     • Unscrew the faulty sensor from its mounting.
     • Install the new sensor and reconnect the wiring.

3. Update Transmission Software:

   • If the hesitation is due to software issues, visit an authorized dealer for a software update on the transmission control unit (TCU).

4. Inspect and Repair Wiring:

   • If you find damaged wiring or connectors, repair or replace as necessary to ensure proper electrical function.

Estimated Time for Repair

• Fluid and filter replacement: 1-2 hours
• Sensor replacement: 1 hour
• Software update: 30 minutes to 1 hour
• Total time may vary based on the extent of the issues found.

Safety Warnings

• Always ensure the vehicle is securely lifted and supported with jack stands before working underneath.
• Be cautious of hot engine components and fluids when performing maintenance.