Understanding TPMS Fitment for Forthing Vehicles
Forthing (Dongfeng Forthing) produces a range of SUVs, MPVs, and commercial vans that rely on direct TPMS sensors mounted inside the tire. The BL-ST-052 sensor from BH-Sens (Baolong Technology) is a direct replacement designed to match the factory-fit sensors used across multiple Forthing model lines. However, compatibility is not universal—it depends on the sensor’s frequency, programming, and physical mounting type.
The BL-ST-052 operates at 433MHz and uses a clamp-in design, which is the standard for most Forthing vehicles after 2014. Unlike universal sensors that require cloning or programming, this unit is pre-programmed to the OE specifications, meaning it should work out of the box if your vehicle originally used one of the listed OE numbers.
Compatible Forthing Models and Year Coverage
Based on OE cross-references and verified fitment data, the BL-ST-052 covers the following Forthing applications. Note that model years vary by market region (China, Southeast Asia, South America, etc.), so always double-check with your chassis number.
| Forthing Model | Approximate Year Range | Notes |
|---|---|---|
| Joyear (X5, S50) | 2015–2020 | Common on 1.5L and 1.6L gasoline variants |
| Lingzhi (M5, M3, V3) | 2016–2021 | Covers both passenger and commercial versions |
| T5 (T5L) | 2018–2022 | SUV platform; verify frequency before ordering |
| S500 | 2017–2020 | MPV with 4-sensor system |
| M7 | 2019–2021 | Larger MPV; uses same 433MHz protocol |
| F600 | 2016–2020 | Light commercial van |
Important: The table above is a guide—not every trim or production year within these ranges uses the same sensor. Forthing occasionally used different frequencies (315MHz or 433MHz) depending on the region or supplier. The BL-ST-052 is specifically designed for 433MHz systems, so if your vehicle uses 315MHz, this sensor will not communicate with your TPMS receiver.
How to Verify Fitment Before Buying
Avoid the hassle of returns by following these three verification steps:
Step 1: Locate Your Original Sensor’s OE Number
Your existing TPMS sensor has a part number printed on the metal housing or the rubber valve stem. For Forthing vehicles, the three OE numbers that match the BL-ST-052 are:
- CM5B3685020
- CM5B3685020S
- SX5G3685020B
If your original sensor shows any of these numbers, the BL-ST-052 is a direct replacement. If it shows a different number (e.g., CM5B368502C), check the frequency first—it may be a later revision that still uses 433MHz but requires a different sensor.
Step 2: Check the Frequency on Your Current Sensor
Most Forthing sensors list the frequency in MHz on the label (e.g., “433 MHz” or “433.92 MHz”). If the label is worn, you can:
- Use a TPMS diagnostic tool (like a Bartec or Autel) to read the frequency from the sensor.
- Check your owner’s manual or contact a Forthing dealer—most models from 2015 onward use 433MHz, but the Lingzhi M3 (early 2016) sometimes shipped with 315MHz units.
Step 3: Verify Physical Compatibility
The BL-ST-052 is a clamp-in sensor, meaning it attaches to the tire valve stem with a metal nut and seals with a rubber grommet. This is identical to factory Forthing sensors. If your vehicle uses a snap-in or banded sensor, this product will not fit. Clamp-in sensors are standard on Forthing models listed above, but if you have aftermarket wheels or a modified valve stem, measure the stem diameter—it should be standard 11.5mm.
Common Fitment Mistakes to Avoid
- Assuming all Forthing models are the same: Even within the Joyear lineup, the X5 (2015–2018) uses the BL-ST-052, but the newer X5 (2020+) may use a different sensor with a different OE number. Always verify by VIN.
- Ignoring sensor age: TPMS sensors have a battery life of 5–7 years. If your Forthing is older than 2017, the original sensors may be near end-of-life. Replacing all four at once is recommended.
- Mixing frequencies: Installing a 433MHz sensor in a 315MHz system will cause the TPMS light to stay on. The receiver cannot detect the signal. If you’re unsure, buy a single sensor first and test it with a TPMS tool.
Recommended Part: BH-Sens BL-ST-052
For Forthing owners looking for a reliable, pre-programmed replacement, the BL-ST-052 | BH-Sens 433MHz TPMS Tire Pressure Sensor | Fits Forthing | OE# CM5B3685020, CM5B3685020S, SX5G3685020B is a solid choice. It matches the OE specifications of the three listed part numbers, uses the correct 433MHz frequency, and installs without the need for cloning or learning procedures on most Forthing TPMS receivers. If you’ve verified your vehicle fits the table above, this sensor will save you the cost and time of programming.
FAQ
Can I use the BL-ST-052 on a Forthing T5L from 2022?
Yes, but only if your T5L uses 433MHz sensors. The 2022 T5L typically used the SX5G3685020B OE number, which matches this sensor. However, verify by checking the original sensor label or using a TPMS diagnostic tool.
Do I need to program the BL-ST-052 after installation?
No—this sensor is pre-programmed to the OE specifications. It should auto-learn to your Forthing’s TPMS receiver after driving a few miles above 25 km/h. If it doesn’t, use a TPMS relearn tool to trigger the sensor manually.
What if my Forthing uses 315MHz instead of 433MHz?
You will need a different sensor. The BL-ST-052 is strictly for 433MHz systems. Check your original sensor’s frequency or contact BH-Sens for a 315MHz variant.
How many sensors does my Forthing need?
Forthing vehicles use four sensors—one per wheel. The spare tire (if full-size) typically does not have a sensor. Replace all four at once if your current sensors are over 5 years old.