Understanding the BL-ST-052 TPMS Sensor
The BL-ST-052 is a BH-Sens (Baolong Technology) aftermarket TPMS sensor operating at 433MHz. It comes pre-programmed, meaning it is ready to install without additional programming tools—the sensor ID is preset at the factory. This sensor uses a clamp-in design, which is the standard for most modern vehicles, including many SUVs and crossovers like the Equinox Plus.
The OE numbers listed—CM5B3685020, CM5B3685020S, SX5G3685020B—are specific to Forthing vehicles. However, TPMS sensors from the same manufacturer (Baolong) are often shared across multiple brands and platforms. The key is to identify whether your Equinox Plus uses a sensor that matches these specifications.
Step-by-Step Fitment Verification Process
1. Identify Your Current Sensor’s OE Number
This is the single most reliable method. Do not guess based on vehicle year or trim. Here is how:
- Remove the tire at a shop or use a tire machine if you have access.
- Locate the sensor mounted on the valve stem inside the wheel.
- Read the OE number printed on the sensor body. It is usually a 10-12 character alphanumeric code (e.g., CM5B3685020).
- Write it down and compare it to the OE numbers listed for BL-ST-052.
If your original sensor reads CM5B3685020, CM5B3685020S, or SX5G3685020B, the BL-ST-052 is a direct replacement. If it reads something else, the sensor may still work if it shares the same frequency and protocol—but direct OE number match is safest.
2. Check the Frequency
The BL-ST-052 operates at 433MHz. Most Equinox Plus models from 2018 onward use 433MHz TPMS sensors, but earlier models may use 315MHz. To confirm:
- Look at the sticker on your original sensor. The frequency is usually printed as “433MHz” or “315MHz.”
- Alternatively, check your vehicle’s owner manual or contact a dealer for the TPMS frequency specification.
A frequency mismatch means the sensor will not communicate with your vehicle’s TPMS module.
3. Verify Clamp-in vs. Snap-in Design
The BL-ST-052 is a clamp-in sensor, which uses a metal nut to secure the valve stem to the wheel. Most Equinox Plus models use clamp-in sensors. However, some budget trims or older models may use snap-in sensors with a rubber grommet. If your vehicle uses snap-in, the BL-ST-052 is not physically compatible.
4. Confirm Protocol Compatibility
Even if the OE number, frequency, and design match, the sensor must use the same communication protocol (e.g., Schrader, Continental, or Baolong’s proprietary protocol). The BL-ST-052 is a Baolong sensor, which is common in Chinese-market vehicles. If your Equinox Plus was manufactured for the Chinese market, compatibility is more likely. For other markets, check if your original sensor brand is also Baolong.
Fitment Reference Table
The table below summarizes the key compatibility factors for the BL-ST-052 with the Equinox Plus. Use this as a checklist when verifying fitment.
| Verification Factor | What to Check | BL-ST-052 Specification | Equinox Plus Typical Spec |
|---|---|---|---|
| OE Number Match | Read off old sensor | CM5B3685020, CM5B3685020S, SX5G3685020B | Varies; check your sensor |
| Frequency | Sticker on sensor or manual | 433MHz | 433MHz (2018+) / 315MHz (earlier) |
| Sensor Type | Valve stem design | Clamp-in | Clamp-in (most models) |
| Brand/Protocol | Original sensor brand | Baolong (BH-Sens) | May be Baolong, Schrader, or Continental |
| Pre-programmed | ID already set | Yes | No programming needed if OE number matches |
Why You Should Not Rely Solely on Vehicle Model and Year
Many online fitment guides incorrectly list sensors by vehicle model alone. The Equinox Plus is a relatively new nameplate, and TPMS sensors can vary even within the same model year due to:
- Different production plants
- Mid-year changes in supplier
- Aftermarket replacement history (previous owner may have installed a different sensor)
For example, a 2023 Equinox Plus built in China might use a Baolong sensor, while the same model built in another region might use a Continental sensor. The only way to be certain is to physically inspect the original sensor.
How to Install the BL-ST-052 (Brief Overview)
Once you have verified fitment, installation is straightforward for a qualified technician:
- Remove the old sensor by deflating the tire, breaking the bead, and unscrewing the clamp nut.
- Install the new sensor with a new seal kit (usually included). Torque the clamp nut to the manufacturer’s specification—typically around 35-40 in-lbs. Do not overtighten.
- Re-mount and balance the tire.
- Test the sensor by driving the vehicle above 25 mph for a few minutes. The TPMS warning light should turn off.
Because the BL-ST-052 is pre-programmed, no additional TPMS tool is required for ID pairing. However, if your vehicle requires relearning after sensor replacement, consult your owner manual or a shop with a TPMS tool.
Common Mistakes When Buying TPMS Sensors
- Buying by year only. As mentioned, this is risky. Always verify the OE number.
- Ignoring frequency. A 433MHz sensor will not work on a 315MHz system.
- Assuming all pre-programmed sensors are universal. Pre-programmed means the ID is set, but the sensor still must match the vehicle’s protocol.
- Not checking the valve stem type. Clamp-in and snap-in are not interchangeable without changing the entire wheel assembly.
Recommended Part
If your Equinox Plus uses OE numbers CM5B3685020, CM5B3685020S, or SX5G3685020B, the BL-ST-052 | BH-Sens 433MHz TPMS Tire Pressure Sensor | Fits Forthing | OE# CM5B3685020, CM5B3685020S, SX5G3685020B is a direct fit. It is pre-programmed, so you can install it without a TPMS tool. Always double-check the frequency and design before ordering.
FAQ
Does the BL-ST-052 work on a 2023 Equinox Plus?
It depends on the OE number on your original sensor. If it matches CM5B3685020, CM5B3685020S, or SX5G3685020B, then yes. Otherwise, you need to verify the frequency and protocol first. Do not assume year alone guarantees compatibility.
How do I know if my Equinox Plus uses 433MHz TPMS sensors?
Check the sticker on your original sensor. If it is not visible, look in your owner manual under “Tire Pressure Monitoring System” specifications. Most Equinox Plus models from 2018 onward use 433MHz, but earlier models may use 315MHz. When in doubt, contact a dealer with your VIN.
Can I install a snap-in sensor instead of clamp-in?
No. The BL-ST-052 is clamp-in and requires a metal nut. Snap-in sensors use a rubber grommet and are not interchangeable without changing the entire valve stem assembly. Always match the design type of your original sensor.
What if the BL-ST-052 does not work after installation?
First, confirm that the OE number and frequency match. If they do, drive the vehicle above 25 mph for 5-10 minutes to allow the sensor to register. If the light remains on, the vehicle may require a TPMS relearn procedure. Some models need a tool to reset the sensor IDs. If problems persist, the sensor may be defective—check the return policy before ordering.