Understanding EADO PHEV TPMS Frequency Requirements
The EADO PHEV relies on a direct TPMS system, meaning each wheel houses a sensor that measures tire pressure and temperature and transmits data wirelessly to the vehicle’s ECU. The critical first specification to get right is the frequency band.
Why 433MHz and Not 315MHz
North American TPMS sensors predominantly operate at 315MHz, while most global markets—including China and Europe—use 433MHz. The EADO PHEV, being a Chinese-market plug-in hybrid, is engineered for 433MHz operation. Attempting to install a 315MHz sensor will result in zero communication with the vehicle’s receiver module.
The BH-Sens BL-ST-028 sensor (SKU: BL-ST-028) operates at exactly 433MHz and is pre-programmed to match the EADO PHEV’s protocol. This eliminates the need for a separate programming tool during installation.
Frequency band summary:
| Frequency | Common Market | EADO PHEV Compatibility |
|---|---|---|
| 315MHz | North America | Not compatible |
| 433MHz | Global (China, EU, APAC) | Compatible |
Battery Life and Replacement Intervals
TPMS sensors contain non-replaceable lithium batteries. For the EADO PHEV, the sensors are sealed units—you cannot swap the battery alone. Understanding expected battery life helps you plan replacement before failure.
Typical Battery Life for 433MHz Sensors
Most 433MHz TPMS sensors, including the BH-Sens units, use a CR2032 or similar lithium manganese dioxide cell. Under normal driving conditions:
- 5–7 years is the standard lifespan
- 3–5 years in extreme climates (persistent high heat above 60°C or extreme cold below -30°C)
- 4–6 years for vehicles driven less than 5,000 miles annually (fewer transmissions, but internal self-discharge still occurs)
The EADO PHEV’s hybrid system does not affect battery life differently than a conventional ICE vehicle. However, because the PHEV may run in electric-only mode for extended periods, the TPMS sensors still transmit at the same intervals—battery drain is not reduced.
Warning Signs of Low Battery
- Dashboard TPMS warning light stays on after tire inflation
- Intermittent pressure readings on the display
- No readings at cold start (sensor wakes up but cannot transmit strong enough signal)
If you see these symptoms, do not just inflate the tires and reset the system. The sensor battery is likely depleted. Replace the sensor entirely.
IP Rating: What It Means for Your EADO PHEV
TPMS sensors are mounted inside the tire, exposed to moisture, road salt, mud, and pressure changes. The IP (Ingress Protection) rating indicates how well the sensor resists dust and water.
Minimum IP Rating Requirement
For the EADO PHEV, the factory spec is IP67 or higher. Here is what that means:
| IP Code | Dust Protection | Water Protection |
|---|---|---|
| IP67 | Full dust ingress protection (dust-tight) | Protected against temporary immersion in water up to 1 meter for 30 minutes |
| IP68 | Full dust ingress protection | Protected against continuous immersion beyond 1 meter (manufacturer specifies depth) |
IP67 is sufficient for normal driving through rain, puddles, and car washes. IP68 provides extra margin if you frequently drive through deep water or off-road. The BH-Sens BL-ST-028 carries an IP67 rating, matching the EADO PHEV’s factory requirement.
Important: Do not confuse the sensor’s IP rating with the valve stem’s corrosion resistance. The clamp-in design of the BL-ST-028 uses a brass or stainless steel valve stem, which resists corrosion better than rubber snap-in stems.
Protocol Compatibility: The Most Overlooked Spec
Even with the correct frequency (433MHz) and IP rating, a TPMS sensor will not work if the communication protocol does not match the vehicle’s ECU. The EADO PHEV uses a protocol that is compatible with Schrader-style 315/433MHz sensors or OEM Baolong protocols.
How Protocols Work
Each TPMS sensor manufacturer uses a specific data format for the pressure, temperature, and sensor ID transmitted to the ECU. Ford, Toyota, and Changan (parent brand of EADO) all use different protocols. A sensor programmed for a Ford 433MHz system will not pair with a Changan-based system.
The BL-ST-028 is pre-programmed to work with the following protocols:
- Changan / EADO PHEV native protocol
- Baolong (BH-Sens) protocol (OEM for many Chinese-market vehicles)
- Schrader protocol (common cross-compatibility)
How to Confirm Protocol Match
- Check the original sensor part number on your current EADO PHEV sensor. Look for numbers like: 3601010CD01, 3601010DG01, 3601010MK02, or 3601010MK02ED01.
- If the sensor is unreadable, use a TPMS diagnostic tool to read the protocol type from the vehicle’s ECU.
- Match the replacement sensor to those OE numbers.
The BL-ST-028 directly supersedes those OE numbers, meaning no programming or cloning is needed—it is “plug and play.”
Installation Considerations for EADO PHEV
Clamp-in vs. Snap-in
The EADO PHEV uses clamp-in sensors (metal valve stem secured by a nut from outside the wheel). The BL-ST-028 is clamp-in, matching the factory design. Snap-in sensors (rubber valve stem) are not recommended—they are less durable and not designed for this vehicle’s wheel profile.
Torque Specification
Tighten the valve stem nut to the manufacturer’s recommended torque range (typically 3–5 Nm). Over-tightening can crack the sensor housing or distort the sealing gasket. Always use a torque wrench.
Relearn Procedure After Replacement
After installing new sensors, the EADO PHEV requires a TPMS relearn procedure. This typically involves:
- Driving above 25 mph (40 km/h) for 10–15 minutes for auto-relearn, OR
- Using a TPMS trigger tool to activate each sensor in sequence (left front, right front, right rear, left rear)
Recommended Part for EADO PHEV
If you need a replacement TPMS sensor for your EADO PHEV, the BL-ST-028 | BH-Sens 433MHz TPMS Tire Pressure Sensor | Fits Avatr, Changan, Deepal, Mazda, Nevo & 1 More | OE# 3601010CD01, 3601010DG01, 3601010MK02 is the correct choice. It is pre-programmed for 433MHz, IP67-rated, and compatible with the EADO PHEV’s protocol. No programming tool is required—install it, drive the relearn cycle, and the dashboard warning will clear.
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FAQ
Can I use a 315MHz TPMS sensor on my EADO PHEV?
No. The EADO PHEV’s receiver module is designed exclusively for 433MHz signals. A 315MHz sensor will not communicate with the ECU, and the TPMS warning light will remain illuminated. Always confirm your vehicle’s frequency before purchasing—check the original sensor part number or consult your owner’s manual.
How do I know if my EADO PHEV TPMS sensor battery is dead?
The primary indicator is a persistent TPMS warning light after you have inflated all tires to the correct pressure. You may also see blank or “–” readings for one or more tires on the dashboard display. If the light flashes for 60–90 seconds at startup and then stays solid, that typically indicates a sensor fault or dead battery rather than low pressure.
Is the BH-Sens BL-ST-028 compatible with all EADO PHEV model years?
Yes, the BL-ST-028 fits all EADO PHEV model years that use OE numbers 3601010CD01, 3601010DG01, 3601010MK02, or 3601010MK02ED01. These part numbers cover the majority of EADO PHEV production from 2019 onward. For earlier models (pre-2019), verify your sensor’s part number before ordering—some early units may use a different protocol.
Do I need to reprogram the sensor after installation?
No. The BL-ST-028 comes pre-programmed with the correct protocol and ID range for the EADO PHEV. Simply install it in the wheel, mount the tire, and perform the vehicle’s standard TPMS relearn procedure (auto-relearn or trigger tool). No cloning or manual ID programming is required.