Why does my 2018 Toyota Camry have a rough transmission shift?

Toyota Camry Eighth Generation (2018-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

668 words

Problem Statement

Learn how to diagnose and repair rough transmission shifts in the 2018 Toyota Camry with our step-by-step guide, including symptoms, diagnostic steps, and tools required.

Affected Component

transmission

Estimated Time

2-4 hours

Symptoms

•Noticeable hard shifting between gears
•Delayed engagement when shifting from park to drive/reverse
•Slipping or jerking sensation while accelerating
•Unusual noises during shifting (grinding or clunking sounds)
•Check Engine Light (CEL) may be on

Diagnostic Steps

1
Check for Warning Lights
2
Connect the OBD-II scanner to the vehicle's OBD-II port and read any trouble codes
3
Check the transmission fluid level and condition using the dipstick
4
Raise the vehicle and inspect the transmission for any visible leaks
5
Take the vehicle for a test drive under varied conditions

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 dipstick
•Fluid extractor
•Clean rag
•Jack and jack stands
•Basic hand tools (screwdrivers, wrenches)
•Multimeter

Related Faults

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Diagnostic Steps

1
Check for Warning Lights
2
Connect the OBD-II scanner to the vehicle's OBD-II port and read any trouble codes
3
Check the transmission fluid level and condition using the dipstick
4
Raise the vehicle and inspect the transmission for any visible leaks
5
Take the vehicle for a test drive under varied conditions

Solution

Problem: Rough Transmission Shift in 2018 Toyota Camry

Repair Instructions:

If the diagnostic steps indicate that the transmission fluid is low or contaminated, or if any specific fault codes are noted, follow these repair instructions:

1. Transmission Fluid Change:

Tools Required: Fluid extractor, new transmission fluid, a funnel, a drain pan, replacement transmission filter (if applicable).
Action:
1. Position the vehicle on a level surface and raise it using jack stands.
2. Place the drain pan under the transmission pan.
3. Remove the transmission pan bolts and carefully lower the pan to drain the old fluid.
4. If equipped, replace the transmission filter.
5. Clean the transmission pan and the mating surface on the transmission.
6. Reinstall the pan using a new gasket and torque the bolts to the manufacturer’s specifications.
7. Add new transmission fluid through the dipstick tube using a funnel, following the manufacturer’s specifications for fluid type and quantity.
8. Start the engine, let it run for a few minutes, and check the fluid level; add as necessary.

2. Electrical and Sensor Issues:

If trouble codes indicate issues with transmission sensors (e.g., speed sensors), follow these steps:
- Tools Required: Multimeter, basic hand tools.
- Action:
  1. Disconnect the electrical connector from the sensor.
  2. Use a multimeter to check the resistance or voltage output according to the specifications in the service manual.
  3. If the sensor is faulty, replace it with a new one and clear the trouble codes using the OBD-II scanner.

3. Transmission Control Module (TCM) Reset:

If no physical issues are found, you may need to reset the TCM.
- Tools Required: OBD-II Scanner.
- Action:
  1. Connect the OBD-II scanner and navigate to the TCM settings.
  2. Select the option to reset or clear adaptation.
  3. Take the vehicle for a test drive to monitor the results.

Conclusion:

If, after performing these steps, the rough shifting persists, further diagnostics may be needed, possibly requiring professional assistance. It could indicate more severe internal transmission issues or a need for a software update for the TCM. Always ensure to follow manufacturer guidelines for any repair or maintenance procedures.