why does my Ford Explorer Fifth Generation (2011-2019) transmission slip when shifting gears

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

4 min read

632 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 transmission slippage in Ford Explorer Fifth Generation (2011-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Transmission

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

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

Symptoms

•Transmission slips when shifting between gears
•Delay in acceleration after shifting
•Engine revs higher than normal without corresponding speed increase
•Check engine light may illuminate
•Transmission fluid may have a burnt smell or dark color
•Unusual noises during shifting (e.g., grinding or whining)

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for transmission-related trouble codes.
2
Inspect transmission fluid level and condition; ensure it is at the correct level and not burnt.
3
Check for any visible leaks around the transmission and under the vehicle.
4
Test the battery voltage and charging system to ensure the transmission control module is receiving proper power.
5
Inspect the transmission filter for clogs or blockages.
6
Perform a road test to replicate the slippage and note any patterns related to speed or load.

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
•Transmission funnel
•Fluid catch pan
•Socket set
•Multimeter
•Screwdriver
•Wire brush

Parts Required

•Transmission fluid (manufacturer-specified)
•Transmission filter
•Gasket for the transmission pan

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Symptoms

•Transmission slips when shifting between gears

•Delay in acceleration after shifting

•Engine revs higher than normal without corresponding speed increase

•Check engine light may illuminate

•Transmission fluid may have a burnt smell or dark color

•Unusual noises during shifting (e.g., grinding or whining)

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for transmission-related trouble codes.
2
Inspect transmission fluid level and condition; ensure it is at the correct level and not burnt.
3
Check for any visible leaks around the transmission and under the vehicle.
4
Test the battery voltage and charging system to ensure the transmission control module is receiving proper power.
5
Inspect the transmission filter for clogs or blockages.
6
Perform a road test to replicate the slippage and note any patterns related to speed or load.

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a level surface and secure it with wheel chocks.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Check and Replace Transmission Fluid

Tools Required: Transmission funnel, fluid catch pan, socket set.
Sub-steps:
- Locate the transmission dipstick; pull it out and wipe it clean.
- Insert the dipstick back in and remove it again to check the fluid level.
- If low, add the manufacturer-specified transmission fluid through the dipstick tube using a funnel.
- If the fluid is burnt or dirty, drain the old fluid by removing the drain plug or pan.
- Replace with new transmission fluid, ensuring to use the correct type specified in the owner’s manual.

3. Replace Transmission Filter

Tools Required: Socket set, screwdriver, gasket scraper.
Sub-steps:
- Remove the transmission pan by unscrewing all bolts.
- Carefully separate the pan from the transmission to avoid damaging the gasket.
- Remove the old transmission filter and install a new one.
- Clean the pan and the mating surface on the transmission.
- Reinstall the pan with a new gasket, tightening bolts to the manufacturer’s specified torque.

4. Inspect and Repair Electrical Connections

Tools Required: Multimeter, wire brush.
Sub-steps:
- Inspect the wiring harness and connectors related to the transmission for any signs of corrosion or damage.
- Use a multimeter to check for continuity in the transmission control module wiring.
- Clean any corroded connections with a wire brush and apply electrical grease before reconnecting.

5. Reconnect Battery and Test Drive

Reconnect the negative battery terminal.
Start the vehicle and allow it to reach operating temperature.
Conduct a test drive to ensure the transmission shifts smoothly without slipping.