FAULTBASE
NEWSASKCars
© 2025 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
Home/Cars/Toyota/Highlander/XU70 (2020-Present)/how to fix P0700 transmission code on Toyota Highlander XU70 (2020-Present)

how to fix P0700 transmission code on Toyota Highlander XU70 (2020-Present)

Toyota Highlander XU70 (2020-Present)

Severity: highDifficulty: mediumError Code: P07002-4 hours
3 min read
476 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 P0700 transmission code in Toyota Highlander XU70. Step-by-step guide with diagnostic procedures and repair instructions.

Error Code
P0700
Component
Transmission
Repair Time
2-4 hours

Safety Warnings

  • ⚠Disconnect the battery before working on electrical systems
  • ⚠Allow the engine to cool completely before inspecting the transmission

Symptoms

  • •Check engine light illuminated
  • •Erratic shifting or harsh transmission behavior
  • •Delayed engagement when shifting from park to drive or reverse
  • •Reduced fuel efficiency
  • •Transmission overheating
  • •Transmission warning light on the dashboard

Diagnostic Steps

  1. 1Scan for error codes using OBD-II scanner
  2. 2Inspect transmission fluid level and condition
  3. 3Examine the wiring harness and connectors related to the TCM for damage
  4. 4Check the TCM using diagnostic software to evaluate its operation
  5. 5Inspect the transmission solenoids and sensors for proper operation
  6. 6Conduct a test drive to replicate the symptoms

Solution

Solution

1. Preparation

  • Gather necessary tools and parts.
  • Disconnect the negative battery terminal to prevent electrical shorts.

2. Check and Replace Transmission Fluid (if necessary)

  • Sub-steps:
    • Remove the transmission fluid dipstick and check the fluid level.
    • If the fluid is low or dirty, drain the old fluid and replace it.
    • Use the manufacturer-recommended transmission fluid type.
    • Refill with the correct amount of fluid as per specifications.

3. Inspect and Repair Wiring/Connectors

  • Sub-steps:
    • Remove any protective covers to access the wiring harness connected to the TCM.
    • Inspect for frayed wires or corrosion on connectors.
    • Repair any damaged wires or replace connectors as needed.

4. Replace TCM (if faulty)

  • Sub-steps:
    • Locate the TCM, usually found near the transmission or under the dash.
    • Disconnect the wiring harness from the TCM.
    • Remove the mounting screws and take out the old TCM.
    • Install the new TCM and secure it with screws.
    • Reconnect the wiring harness.

5. Clear Codes and Test

  • Sub-steps:
    • Reconnect the negative battery terminal.
    • Use an OBD-II scanner to clear the P0700 code and any other related codes.
    • Start the engine and conduct a test drive to ensure proper transmission operation.

Tools Required:

  • OBD-II scanner
  • Socket set
  • Torque wrench
  • Screwdrivers
  • Transmission fluid pump (if necessary)

Parts Required:

  • Transmission fluid (as per specifications)
  • Transmission Control Module (if replacement is necessary)
  • Wiring connectors (if damaged)

Estimated Repair Time: 2-4 hours

Safety Warnings:

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

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
  • Torque wrench
  • Screwdrivers
  • Transmission fluid pump

Parts Required

  • Transmission fluid
  • Transmission Control Module
  • Wiring connectors

Additional Information

Error CodeP0700
Component

Transmission

Repair Time

2-4 hours

Difficulty

medium

Severity

high

Tools

5 items

Parts

3 items

Related Faults

Discover similar issues

  1. my Toyota Highlander XU70 (2020-Present) AC is blowing warm air what to do

    Learn how to diagnose and fix AC blowing warm air in Toyota Highlander XU70. Step-by-step guide with symptoms, diagnostic steps, and repair instructio...

    Component:HVAC
    Symptoms
    • •AC system not cooling the air
    • •Unusual noises from the AC compressor
    • +{count} more
  2. how to reset the tire pressure monitoring system on Toyota Highlander XU70 (2020-Present)

    Learn how to reset the tire pressure monitoring system on a 2020-present Toyota Highlander XU70. Step-by-step guide for accurate tire pressure reading...

    Component:Electrical
    Symptoms
    • •TPMS warning light illuminated on the dashboard
    • •Inaccurate tire pressure readings displayed on the vehicle's information screen
    • +{count} more
  3. why does my Toyota Highlander XU70 (2020-Present) have a fuel smell inside the cabin

    Learn how to diagnose and fix fuel smell inside the cabin of a 2020-Present Toyota Highlander XU70. Step-by-step guide with symptoms and solutions.

    Component:Fuel System
    Symptoms
    • •Strong fuel odor inside the cabin
    • •Fuel odor noticeable near fuel filler cap
    • +{count} more
  4. how to troubleshoot transmission slipping in my Toyota Highlander XU70 (2020-Present)

    Learn how to troubleshoot and fix transmission slipping in your 2020-Present Toyota Highlander XU70. Step-by-step guide with diagnostic and repair ins...

    Component:Transmission
    Symptoms
    • •Engine RPM increases without a corresponding increase in vehicle speed
    • •Delayed engagement when shifting from park to drive/reverse
    • +{count} more
  5. what causes my Toyota Highlander XU70 (2020-Present) to overheat while driving

    Learn how to diagnose and fix overheating issues in the 2020 Toyota Highlander XU70. Step-by-step guide with symptoms, diagnostic steps, and repair in...

    Component:Cooling System
    Symptoms
    • •Engine temperature gauge indicating high levels
    • •Steam or coolant leaking from under the hood
    • +{count} more
  6. my Toyota Highlander XU70 (2020-Present) has a burning smell what could it be

    Learn how to diagnose and fix burning smell issues in the 2020 Toyota Highlander XU70. Step-by-step guide with symptoms, diagnostic steps, and repair ...

    Component:Engine
    Symptoms
    • •Burning smell from the engine compartment or cabin
    • •Check engine light illuminated
    • +{count} more

Share this solution

Comments

Sign in to share your thoughts

Sign In

No comments yet

Be the first to share your thoughts

Back to Generation