Frequency Band: Why 433MHz Matters for Your CL CLASS
Most aftermarket TPMS sensors fall into two frequency bands: 315MHz (common in North American and some Asian markets) and 433MHz (dominant in Europe, China, and many global platforms). The BL-ST-013 uses 433MHz, which is the standard for Chery/Exeed/Hima platforms, including the CL CLASS CL CLASS.
Using the wrong frequency is a common mistake. If you install a 315MHz sensor on a CL CLASS that expects 433MHz, the ECU will never receive data, and the TPMS warning light stays on. The BL-ST-013 is factory-set to 433MHz and requires no user frequency adjustment.
Battery Life: What to Expect
The BL-ST-013 uses a lithium manganese dioxide coin cell (typically a BR1632 or equivalent). Under normal driving conditions—mixed city/highway with average daily mileage around 30–50 km—the battery lasts 5 to 7 years. Real-world factors that reduce battery life:
- Extreme temperatures (sustained below -20°C or above 80°C inside the tire)
- Frequent high-speed driving (above 140 km/h for extended periods)
- Low tire pressure that forces more frequent transmission cycles
The sensor transmits data every 60 seconds when the car is moving and enters a low-power sleep mode when stationary. There is no user-replaceable battery; once the battery dies, replace the entire sensor. A dying battery typically gives 2–4 weeks of intermittent signal before complete failure.
IP Rating: IP67 Means What in Practice
The BL-ST-013 is rated IP67, which is the industry standard for TPMS sensors.
- IP6 = completely dust-tight. No fine road dust or sand can enter.
- IP7 = protected against immersion in water up to 1 meter for 30 minutes.
This is sufficient for normal driving through rain, puddles, and even shallow flooded roads. However, this rating does not cover submersion for longer periods (e.g., off-road water crossings where the wheel is fully underwater for hours). If your CL CLASS is used in extreme off-road conditions, check the sensor seal after each deep-water crossing.
Protocol Compatibility: Pre-Programmed for CL CLASS
The BL-ST-013 is pre-programmed for direct fitment on Chery, Exeed, and Hima vehicles, including the CL CLASS. It uses the original equipment (OE) protocol from Baolong Technology (BH-Sens). This means:
- No need for a TPMS programming tool to assign vehicle-specific ID codes.
- The sensor communicates with the ECU using the same data frame structure as the factory sensor.
- It is compatible with 17 specific vehicle applications listed under OE numbers 802000277AA and 802000589AA.
The sensor does not support universal or multi-protocol modes—it is locked to the Baolong protocol. If your CL CLASS was originally equipped with a different brand (e.g., Schrader, VDO), this sensor will not work. Always verify your existing sensor’s part number before ordering.
Technical Specifications Table
| Specification | BL-ST-013 Value |
|---|---|
| Frequency | 433 MHz (fixed) |
| Battery Type | Lithium CR1632 coin cell |
| Battery Life | 5–7 years (typical) |
| IP Rating | IP67 |
| Protocol | Baolong (BH-Sens) OE protocol |
| Installation type | Clamp-in (valve stem replacement) |
| Pre-programmed | Yes (no tool required) |
| Compatible OE numbers | 802000277AA, 802000589AA |
| Vehicle platforms | Chery, Exeed, Hima (including CL CLASS) |
Fitment Notes for CL CLASS
The CL CLASS uses a clamp-in sensor design. Installation requires:
- Removing the tire from the rim
- Removing the old sensor and valve nut
- Installing the BL-ST-013 with a new valve stem grommet and nut (torque to manufacturer spec—typically 3–5 Nm; check your service manual)
- Rebalancing the wheel
The sensor is not compatible with aftermarket wheels that use different valve hole diameters. The standard hole diameter for clamp-in sensors is 11.5 mm.
Recommended Part
For a direct replacement on your CL CLASS, use the BL-ST-013 | BH-Sens 433MHz TPMS Tire Pressure Sensor | Fits Chery, Exeed, Hima | OE# 802000277AA, 802000589AA. It matches the OE frequency, protocol, and physical dimensions of the factory sensor without needing programming tools.
FAQ
Can I install the BL-ST-013 on a CL CLASS that originally used 315MHz sensors?
No. The BL-ST-013 is fixed at 433MHz. If your CL CLASS was built for a 315MHz system, this sensor will not communicate. Check your original sensor’s frequency label or vehicle service manual before purchase.
How do I know when the battery is dying?
Symptoms include intermittent TPMS warnings, missing sensor readings, or a “low battery” fault code in the ECU. The sensor does not send a separate battery level signal—it simply stops transmitting when the voltage drops below the operating threshold.
Does the IP67 rating mean I can pressure-wash the wheels directly?
Yes, but with caution. IP67 protects against low-pressure water jets and immersion. High-pressure pressure washers (above 100 bar) directed at the valve stem area can force water past the seal. Keep the nozzle at least 30 cm away from the valve stem.
Will this sensor work with a third-party TPMS scan tool for diagnostics?
It should read standard TPMS diagnostic data (pressure, temperature, sensor ID) using a tool that supports the Baolong protocol. Common tools like the Autel TS508 or Bartec TPMS tools can read BH-Sens sensors. However, you do not need a tool for programming since the sensor is pre-programmed.