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what do I do if my Tesla Model 3 Highland (2024-present) engine light comes on - Tesla Model 3
Home/Cars/Tesla/Model 3/Highland (2024-present)/what do I do if my Tesla Model 3 Highland (2024-present) engine light comes on

what do I do if my Tesla Model 3 Highland (2024-present) engine light comes on

Tesla Model 3 Highland (2024-present)

Error Codes
1-3 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
521 words

Problem Statement

Learn how to diagnose and fix the check engine light issue on your Tesla Model 3 Highland. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component
Electrical
Estimated Time
1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Always disconnect the vehicle from the charging station before performing any repairs.
  • •Exercise caution when working with high-voltage components in electric vehicles.

Symptoms

  • •Check engine light illuminated
  • •Reduced acceleration or power
  • •Unusual noises from the engine compartment
  • •Battery performance degradation
  • •Increased energy consumption
  • •Vehicle may enter a reduced power mode

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

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
  • •Basic hand tools (screwdriver set, wrenches)
  • •Torque wrench

Parts Required

  • •Tesla-approved coolant

Additional Information

Affected Component
Electrical
Estimated Time
1-3 hours
Difficulty
medium
Severity
medium
Tools Required
3 items
Parts Required
1 item

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Solution
1. Preparation
  • Ensure the vehicle is parked on a level surface.
  • Gather all necessary tools and parts.
  • Disconnect the vehicle from any charging source.
2. Retrieve and Address Error Codes
  • Use the OBD-II scanner to document and clear the error codes.
  • If codes persist after clearing, research them to determine the necessary repairs.
3. Update Software (if applicable)
  • Open the Tesla app and check for software updates.
  • If an update is available, allow the vehicle to install the software update.
4. Battery Management System Inspection
  • Open the trunk and locate the battery management system.
  • Inspect wiring and connectors for corrosion or loose connections.
  • Tighten any loose connections to ensure proper operation.
5. Fluid Checks and Replenishment
  • Check the coolant level in the reservoir; add coolant if necessary (Tesla-approved coolant).
  • Verify brake fluid level and top up if it's below the minimum mark.
6. Final Checks
  • After performing all repairs, reconnect the vehicle to the charging source if previously disconnected.
  • Re-scan with the OBD-II scanner to ensure no error codes remain.