Changan Cars TPMS Reset and Relearn Guide

Changan Cars TPMS Reset and Relearn Guide

Maintaining proper tire pressure is crucial for vehicle safety, handling, fuel efficiency, and tire longevity. Most modern Changan vehicles are equipped with a Tire Pressure Monitoring System (TPMS) that alerts the driver when one or more tires are significantly under-inflated.

If you’ve recently rotated or replaced the tires on your Changan vehicle, or had a TPMS sensor replaced, you will need to perform a TPMS reset and relearn procedure. This process allows the TPMS control module to relearn the sensor IDs and positions.

In this comprehensive guide, we’ll cover everything you need to know about Changan TPMS reset and relearn procedures, including:

  • Which Changan models require a TPMS reset/relearn
  • The different types of TPMS relearn procedures
  • Step-by-step instructions for manual, OBD, and auto relearn methods
  • Using an OBD-II scanner tool for TPMS reset
  • Tips for successful TPMS reset and troubleshooting

By the end, you’ll be fully equipped to reset the TPMS on your Changan vehicle yourself and ensure your tires are properly monitored. Let’s get started!

Changan Models Requiring TPMS Reset/Relearn

The following Changan models are equipped with a TPMS system and require a reset/relearn procedure after tire rotation, replacement, or new TPMS sensor installation:

  • Changan CS35 Plus (2018+)
  • Changan CS55 (2017+)
  • Changan CS75 (2014+)
  • Changan CS85 (2018+)
  • Changan Eado (2012+)
  • Changan Raeton (2013+)

If your specific Changan model is not listed, consult your owner’s manual or contact a Changan dealer to confirm if it has TPMS.

Types of TPMS Relearn Procedures

There are three main types of TPMS relearn procedures used by vehicle manufacturers:

  1. Stationary/Manual Relearn – Requires putting the vehicle into a relearn mode and activating each sensor in a specific order, usually with a TPMS activation tool.
  2. OBD Relearn – Uses a scan tool connected to the OBD-II port to write the sensor IDs to the TPMS control module.
  3. Automatic Relearn – The vehicle automatically relearns the sensor positions as you drive, without any additional tools or procedures required.

The specific relearn procedure varies by Changan model and year. We’ll go through the steps for each type in detail.

Stationary/Manual TPMS Relearn

A manual TPMS relearn requires putting the vehicle into a “relearn mode” and then activating each tire pressure sensor in a specific sequence, typically using a TPMS activation tool. Here’s how to do it:

  1. Ensure all tires are inflated to the pressure listed on the door jamb placard.
  2. Park the vehicle and turn the ignition to the ON position (engine off).
  3. Press and release the TPMS reset button underneath the steering wheel until the TPMS light blinks 3 times. This puts the system into relearn mode.
  4. Starting with the left front tire, use your TPMS tool to activate the sensor by holding it against the sidewall near the valve stem. Wait for a horn chirp to confirm it’s read.
  5. Repeat the process for the right front, right rear, and left rear tires in that order. You must activate all 4 sensors within 2 minutes of entering relearn mode.
  6. After activating all sensors, the TPMS light will blink and then turn off to confirm relearn is complete. Turn the ignition off.
  7. Drive the vehicle over 15 mph for at least 10 minutes to complete the relearn process and clear any residual TPMS warnings.

Some important tips for manual relearns:

  • A TPMS activation tool is required. You can purchase one online or at most auto parts stores.
  • If you don’t activate all 4 sensors within the time limit, the relearn will fail and you’ll need to start over.
  • Make sure you activate the sensors in the correct front-to-rear, left-to-right order, or the relearn won’t work.
  • If the TPMS light stays on after driving, recheck the tire pressures and repeat the relearn procedure.

OBD TPMS Relearn

Some Changan models allow you to relearn the TPMS sensor IDs by connecting a scan tool to the OBD-II diagnostic port and inputting the IDs manually or writing them from the tool to the vehicle. The process varies slightly by scan tool, but here’s the general procedure:

  1. Ensure all tires are inflated to the proper pressure.
  2. Connect your OBD-II scanner to the vehicle’s diagnostic port under the dash. Turn the ignition on.
  3. Navigate to the TPMS relearn function on your scan tool’s menu.
  4. Activate each sensor with your TPMS tool, starting with the left front and moving to the right front, right rear, and left rear. Your scan tool should display the sensor ID after each activation.
  5. Once all sensor IDs are captured, command the scan tool to write the IDs to the vehicle. This transfers the data to the TPMS module.
  6. Disconnect the scan tool and turn the ignition off.
  7. Drive the vehicle above 15 mph for at least 10 minutes to complete the relearn.

The key to a successful OBD relearn is having a compatible scan tool and TPMS activation tool. Consult your tool’s instructions for the exact steps needed.

Automatic TPMS Relearn

Newer Changan models may be equipped with an auto relearn TPMS system that detects changes in tire pressure sensor positions and relearns them automatically as you drive. No tools or additional steps are required.

After rotating tires or installing a new sensor, simply drive the vehicle normally. The TPMS will self-calibrate and clear any warning lights within 10-20 minutes of continuous driving above 15 mph.

Even with auto relearn, it’s still good practice to double check the tire pressures and manually relearn the sensors if a TPMS fault persists after driving.

Using an OBD-II Scanner for TPMS Reset

An OBD-II scanner tool with TPMS functionality can greatly simplify the relearn process and provide additional diagnostic info. Here’s how to use one:

  1. Connect the scanner to the OBD-II port and turn the ignition on.
  2. Activate the TPMS relearn function on the scanner menu.
  3. Select either manual relearn or OBD relearn, depending on your Changan model.
  4. For manual, activate each sensor in the proper order when prompted. For OBD, write the sensor IDs from the scanner to the vehicle.
  5. Follow the on-screen instructions to complete the relearn.
  6. Clear any codes and disconnect the scanner. The relearn should now be complete.

Using a scanner allows you to verify a successful relearn, check for any TPMS fault codes, and ensure all sensors are communicating properly. It’s a worthwhile investment for maintaining your Changan’s TPMS over the long run.

TPMS Reset and Relearn Tips

To wrap up, here are some helpful tips to ensure a smooth and successful TPMS relearn on your Changan:

  • Check the tire pressures first – Inflate all tires to the recommended pressure before starting a relearn. Improper pressures can cause relearn failure or TPMS faults.
  • Do a full relearn when changing sensor positions – Whenever you rotate the tires or install a new sensor, perform a complete manual or OBD relearn to recalibrate the system.
  • Use the right TPMS tools – Make sure you have a compatible TPMS activation tool for your Changan model, and an OBD-II scanner if doing OBD relearn. Cheap, universal tools may not work properly.
  • Follow the exact relearn procedure – Each Changan model has a specific relearn process that must be followed exactly. Refer to the owner’s manual or a professional guide.
  • Finish with a test drive – Always do a 10+ minute test drive after a relearn to make sure the TPMS light turns off and stays off. If it comes back on, theremay be a problem with a sensor or the relearn wasn’t successful.
  • Get professional help if needed – If you’re unsure about the relearn process or encounter any issues, don’t hesitate to have a tire shop or Changan dealer perform it for you. TPMS problems can compromise your safety.

By following these tips and the detailed procedures outlined above, you’ll be able to keep your Changan’s TPMS functioning properly and rest assured your tires are being monitored. Proper tire inflation is key to vehicle safety, performance, and economy, so make TPMS maintenance a regular part of your service routine.

Final Words from Boss Erwin

We hope this guide has given you the knowledge and confidence to perform TPMS reset and relearns on your Changan vehicle. While it may seem daunting at first, it’s a straightforward process once you understand the steps involved.