IM TPMS IM3502
IM3502 TPMS Sensor User Manual
Model: IM3502 | Brand: IM TPMS
Introduction
The IM3502 TPMS Sensor is a pre-programmed, 433MHz rubber stem tire pressure sensor designed for real-time monitoring of your vehicle's tire pressure, temperature, and battery percentage. These sensors are built for durability and ease of installation, ensuring optimal performance and enhanced driving safety.

Image: Pack of four IM3502 TPMS sensors, ready for installation.
Important Safety Information and Disclaimer
TPMS SENSOR IS NOT A D.I.Y. PRODUCT!
TPMS Sensor installation requires a certain level of knowledge, skill, and special equipment. Only Qualified/Certified mechanics with adequate tools should perform the task.
PRE-PROGRAMMED = DIRECT-FIT
Pre-programmed TPMS sensors require pairing/re-learning procedure to communicate with the car's ECU system to send information such as tire pressure, tire location, etc.
DO NOT INSTALL SENSOR IF YOUR TOOLS CAN'T READ OUR SENSORS
Please do not attempt to start a sensor replacement job if your scan tool or OBD diagnostic tool cannot detect our sensor to display information such as sensor ID, frequency, battery status, and PSI.
TPMS SENSORS ARE VEHICLE SPECIFIC.
Use Amazon Part Finder to verify the fitment. For assistance, you may contact the manufacturer at sales@pacificautopart.com if you cannot determine which sensor fits your car.

Image: Important pre-installation information and warnings for the TPMS sensors.
Installation Guide
The IM3502 TPMS sensors are designed for straightforward installation, but professional assistance is recommended due to the specialized nature of the task. The following steps outline the general procedure for both metal and rubber valve stem types.
Metal Valve Stem Installation
Step 1: Insert Valve Stem
Insert the valve stem into the valve hole of the wheel from the inside out.

Image: Visual guide for metal valve stem installation, showing the sensor being inserted into the wheel.
Step 2: Install Washer and Hexagonal Nut
Install the washer and hexagonal nut onto the valve stem from the outside of the wheel.
Step 3: Tighten Hexagonal Nut
Use a wrench to hold the valve stem and keep it vertical. Meanwhile, use a torque wrench to tighten the hexagonal nut with 4.0 N·m (±0.2) torque.
Step 4: Finished Installation
Ensure the sensor is securely mounted and vertical.
Rubber Valve Stem Installation
Step 1: Pull Rubber Valve Stem Through
Using a valve stem tool, pull the rubber valve stem through the valve hole of the wheel until it is fully seated.

Image: Visual guide for rubber valve stem installation, showing the sensor being pulled into place.
Step 2: Screw Sensor and Tighten
Screw the sensor onto the top of the stem. Use a torque wrench to hold the valve stem and maintain a vertical position, then tighten the screw with 1.4 N·m (±0.2) torque.
Step 3: Finished Installation
Confirm the sensor is securely installed and properly aligned.

Image: An IM3502 TPMS sensor correctly installed on a vehicle's wheel.
Operation
The IM3502 TPMS sensors provide real-time monitoring of your tire conditions. Once installed and properly paired with your vehicle's ECU, the sensors continuously transmit data to your car's system.
- Real-Time Monitoring: Stay informed about your tire pressure at all times. The system delivers instant updates on tire pressure, temperature, and battery percentage.
- Proactive Hazard Prevention: By providing continuous data, the sensors allow you to proactively address any issues, such as low pressure or rapid temperature changes, preventing potential hazards and ensuring safer driving.
Maintenance
The IM3502 TPMS sensors are designed for long-term, reliable performance with minimal maintenance requirements.
- Battery Life: Equipped with intelligent Japanese Maxcell batteries, these sensors offer an extended battery life of 5-8 years under normal usage conditions. This ensures consistent and reliable performance without frequent battery replacements.
- Durable Construction: The sensors feature a durable rubber stem construction, built to withstand various road conditions and weather elements, maintaining optimal performance over time.
Troubleshooting
If you encounter issues with your IM3502 TPMS sensors, consider the following common scenarios:
- Sensor Not Detected by Scan Tool: If your scan tool or OBD diagnostic tool cannot detect the sensor or display its information (such as sensor ID, frequency, battery status, and PSI), do not proceed with installation. Ensure your tools are compatible and up-to-date.
- Relearn Procedure: After replacement, your vehicle must relearn and register the new sensors. Please use the standard relearn procedure specified by your car manufacturer. This is crucial for the sensors to communicate correctly with your vehicle's system.

Image: Reminder that sensors are pre-programmed and require a relearn procedure.
Specifications
| Feature | Detail |
|---|---|
| Brand | IM TPMS |
| Model Number | IM3502 |
| Material | Rubber |
| Frequency | 433 MHz |
| Measurement Accuracy | ±2% |
| Battery Type | Lithium Metal (included) |
| Estimated Battery Life | 5-8 years (normal usage) |
| Item Weight | 0.22 Kilograms (7.7 ounces) |
| Package Dimensions | 5 x 3.7 x 2.48 inches |
| Mounting Type | Flange Mount |
| Output Type | Digital |
| Upper Temperature Rating | 248 Degrees Fahrenheit |
| Specific Uses | Automotive |
Warranty and Support
The IM3502 TPMS sensor comes with a 5-Year Limited Warranty. This warranty covers defects in materials and workmanship under normal use.
For technical support, warranty claims, or inquiries regarding vehicle compatibility, please contact the manufacturer directly. You can also refer to the Amazon product page for the latest compatibility information using the Amazon Part Finder tool.
Contact Email: sales@pacificautopart.com
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