how to fix my Toyota Corolla E170 (2013-2019) rough shifting transmission

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

494 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 rough shifting transmission in Toyota Corolla E170 (2013-2019). Step-by-step guide with tools and procedures.

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 handling any components

Symptoms

•Harsh or jerky shifts during acceleration
•Delay in engagement when shifting from park to drive/reverse
•Unusual noise during shifting (grinding or clunking)
•Transmission slipping (engine revs without corresponding vehicle speed)
•Check engine light illuminated (potentially related to transmission codes)

Diagnostic Steps

1
Inspect the transmission fluid level and condition (color and smell)
2
Scan the vehicle’s computer for any diagnostic trouble codes (DTCs) related to the transmission
3
Check the transmission fluid for contamination (metal shavings or burnt smell)
4
Inspect for any visible leaks around the transmission
5
Test the transmission control module (TCM) for proper operation using a multimeter
6
Evaluate the performance of the transmission solenoids

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
•Multimeter
•Funnel
•Drain pan

Parts Required

•Transmission fluid (specific type for the vehicle)
•Transmission filter (if applicable)
•Transmission pan gasket (if removing pan)

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Symptoms

•Harsh or jerky shifts during acceleration

•Delay in engagement when shifting from park to drive/reverse

•Unusual noise during shifting (grinding or clunking)

•Transmission slipping (engine revs without corresponding vehicle speed)

•Check engine light illuminated (potentially related to transmission codes)

Diagnostic Steps

1
Inspect the transmission fluid level and condition (color and smell)
2
Scan the vehicle’s computer for any diagnostic trouble codes (DTCs) related to the transmission
3
Check the transmission fluid for contamination (metal shavings or burnt smell)
4
Inspect for any visible leaks around the transmission
5
Test the transmission control module (TCM) for proper operation using a multimeter
6
Evaluate the performance of the transmission solenoids

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is turned off.
Disconnect the negative battery terminal for safety.

2. Check and Replace Transmission Fluid

Tools Required: Socket set, funnel, drain pan, new transmission fluid (check specifications for type).
Remove the drain plug and allow the old transmission fluid to drain completely into the pan.
Inspect the drain plug for metal shavings; replace if necessary.
Replace the drain plug, ensuring it’s torqued to manufacturer specifications.
Using a funnel, refill the transmission with new fluid until it reaches the correct level according to the dipstick.

3. Inspect and Replace Transmission Filter (if applicable)

Tools Required: Socket set, oil filter wrench.
Locate and remove the transmission pan (may require removing additional components).
Remove the old filter from the valve body and install the new filter.
Clean the transmission pan and replace the gasket before reassembling.

4. Reprogram or Replace TCM (if necessary)

Tools Required: OBD-II scanner, computer software for programming.
If DTCs indicate TCM issues, follow the manufacturer's procedure to reprogram or replace the TCM.
Clear all DTCs and monitor for reoccurrence.