my Ford Explorer Fifth Generation (2011-2019) has a harsh transmission shift what should I do

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

536 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix harsh transmission shifts in Ford Explorer (2011-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Allow the engine to cool before working on the transmission.

Symptoms

•Harsh or jerky shifts during acceleration and deceleration
•Delayed engagement when shifting from park to drive or reverse
•Unusual noises during shifting (clunking or grinding sounds)
•Check engine light illuminated
•Increased RPM before the shift occurs
•Transmission fluid appears dark or burnt

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for transmission-related fault codes.
2
Inspect the transmission fluid level and condition; check for signs of contamination or burning.
3
Examine the transmission control module (TCM) for any software updates or faults.
4
Test the vehicle’s throttle position sensor (TPS) to ensure proper operation.
5
Check for vacuum leaks in the transmission modulator (if equipped).
6
Inspect the wiring and connectors for the transmission for any damage or corrosion.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Socket set
•Torque wrench
•Catch pan
•Fluid pump

Parts Required

•Transmission filter
•Transmission fluid (Mercon LV)
•Transmission pan gasket

Related Faults

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Symptoms

•Harsh or jerky shifts during acceleration and deceleration

•Delayed engagement when shifting from park to drive or reverse

•Unusual noises during shifting (clunking or grinding sounds)

•Check engine light illuminated

•Increased RPM before the shift occurs

•Transmission fluid appears dark or burnt

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for transmission-related fault codes.
2
Inspect the transmission fluid level and condition; check for signs of contamination or burning.
3
Examine the transmission control module (TCM) for any software updates or faults.
4
Test the vehicle’s throttle position sensor (TPS) to ensure proper operation.
5
Check for vacuum leaks in the transmission modulator (if equipped).
6
Inspect the wiring and connectors for the transmission for any damage or corrosion.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the battery to prevent electrical shorts.

2. Transmission Fluid Change

Drain Fluid
- Locate the transmission drain plug and use a socket set to remove it.
- Allow the old fluid to completely drain into a catch pan.
Replace Filter
- Remove the transmission pan using a socket set.
- Take out the old filter and replace it with a new one, ensuring it’s seated correctly.
Install New Fluid
- Reattach the transmission pan with a new gasket, torquing the bolts to manufacturer specifications.
- Refill the transmission with the appropriate type and amount of fluid (typically Mercon LV for Ford vehicles).

3. Reprogram TCM (if needed)

If error codes indicate TCM issues or after fluid changes, consider reprogramming or updating the TCM using a compatible diagnostic tool to ensure it recognizes the new settings.

4. Inspect and Repair Wiring

Visually inspect wiring harnesses and connectors for signs of wear or corrosion.
Replace any frayed or damaged wiring and ensure all connectors are secure.

5. Test Drive

Reconnect the battery and start the engine.
Take the vehicle for a test drive to check for improved shifting and any recurring issues.