my Toyota Corolla E170 (2013-2019) transmission jerks when shifting, what’s wrong?

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

575 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 jerking 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 components.
•Allow the engine to cool before working on the transmission.

Symptoms

•Jerking or lurching sensation during gear shifts
•Delayed or harsh shifting between gears
•Unusual noises (clunking or grinding) during shifting
•Check Engine light illuminated
•Fluid leak underneath the vehicle
•Poor acceleration performance

Diagnostic Steps

1
Scan the vehicle’s onboard diagnostic system using an OBD-II scanner for any error codes.
2
Check the transmission fluid level and condition (color and smell).
3
Inspect the transmission fluid for contamination, such as metal shavings or burnt odor.
4
Examine the transmission mounts for wear or damage.
5
Test the throttle position sensor (TPS) for proper function using a multimeter.
6
Inspect related components like the shift solenoids and wiring for any visible 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
•Transmission fluid pump
•Funnel
•Socket set
•Torque wrench
•Multimeter

Parts Required

•Transmission fluid
•Transmission filter
•Shift solenoids (if faulty)

Related Faults

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Diagnostic Steps

1
Scan the vehicle’s onboard diagnostic system using an OBD-II scanner for any error codes.
2
Check the transmission fluid level and condition (color and smell).
3
Inspect the transmission fluid for contamination, such as metal shavings or burnt odor.
4
Examine the transmission mounts for wear or damage.
5
Test the throttle position sensor (TPS) for proper function using a multimeter.
6
Inspect related components like the shift solenoids and wiring for any visible damage or corrosion.

Solution

1. Preparation

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

2. Check and Replace Transmission Fluid

Tools Required: Transmission fluid pump, funnel, socket set, torque wrench.
Drain the old transmission fluid:
1. Locate the transmission drain plug and place a drain pan underneath.
2. Remove the drain plug using a socket wrench and allow the fluid to completely drain.
Replace the transmission filter:
1. Remove the transmission pan by unscrewing the bolts (torque values may vary).
2. Replace the old filter with a new one and ensure the gasket is seated properly.
Refill the transmission with new fluid:
1. Using a transmission fluid pump and funnel, refill the transmission with the correct type and amount of fluid (refer to owner’s manual).

3. Inspect and Replace Shift Solenoids

Tools Required: Socket set, ratchet, screwdriver.
Access the transmission:
1. Depending on the vehicle design, you may need to remove the transmission pan again.
2. Locate the shift solenoids; they are usually mounted on the side of the transmission.
Replace faulty solenoids:
1. Disconnect the wiring harness from the solenoid.
2. Unscrew the solenoid and replace it with a new one.
3. Reconnect the wiring harness securely.

4. Reassemble and Test

Reattach the transmission pan and torque the bolts to specified values.
Reconnect the battery.
Start the engine and allow it to run for a few minutes, then check for any leaks.