how to fix transmission slipping in my Toyota Corolla E170 (2013-2019)

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

555 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 slipping in Toyota Corolla E170 (2013-2019). 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 and transmission to cool before performing any maintenance.

Symptoms

•Engine RPMs increase without corresponding acceleration
•Delayed or harsh shifting between gears
•Unusual noises during gear changes (grinding or whining)
•Warning lights illuminated on the dashboard (e.g., check engine light)
•Fluid leaks under the vehicle
•Poor fuel efficiency

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related trouble codes.
2
Check the transmission fluid level and condition (color and smell).
3
Inspect for any visible leaks around transmission seals and gaskets.
4
Test the transmission fluid for proper pressure using a pressure gauge.
5
Examine the transmission filter for clogs or restrictions.
6
Verify the operation of the throttle position sensor and vehicle speed sensor.

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 fluid pump
•Funnel
•10mm socket
•Torque wrench
•Multimeter

Parts Required

•Toyota WS transmission fluid
•Transmission filter kit
•Gasket (if needed)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any transmission-related trouble codes.
2
Check the transmission fluid level and condition (color and smell).
3
Inspect for any visible leaks around transmission seals and gaskets.
4
Test the transmission fluid for proper pressure using a pressure gauge.
5
Examine the transmission filter for clogs or restrictions.
6
Verify the operation of the throttle position sensor and vehicle speed sensor.

Solution

1. Preparation

Gather tools and materials.
Disconnect the negative battery terminal to ensure safety.
Ensure the vehicle is on a level surface and secure it with wheel chocks.

2. Check and Replace Transmission Fluid

Tools Required: Transmission fluid pump, funnel, 10mm socket, torque wrench.
Sub-steps:
1. Remove the transmission dipstick and check fluid levels.
2. If the fluid is low, add the correct type of transmission fluid (Toyota WS).
3. If the fluid is burnt or dirty, proceed to drain and replace it.
4. Place a drain pan under the transmission pan, remove the pan bolts using a 10mm socket, and carefully lower the pan.
5. Clean the pan and replace the filter.
6. Reinstall the pan and torque the bolts to the manufacturer’s specifications.
7. Refill the transmission through the dipstick tube with new fluid.

3. Inspect and Replace Transmission Filter

Tools Required: Transmission filter kit, 10mm socket.
Sub-steps:
1. Follow steps 1-4 from the "Check and Replace Transmission Fluid" section to access the filter.
2. Remove the old filter and discard it.
3. Install the new filter ensuring it is seated properly.
4. Reassemble the transmission pan as described earlier.

4. Check for Electrical Issues

Tools Required: Multimeter, wiring diagram.
Sub-steps:
1. Inspect the wiring harness connected to the transmission for damage or corrosion.
2. Use a multimeter to check the voltage and resistance of the transmission sensors.
3. Replace any faulty sensors or wiring as needed.