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Understanding Bisu TPMS Relearn Requirements
{Brand_LINK} vehicles—like many Chinese-market cars—use direct TPMS sensors that transmit pressure and temperature data to the ECU. When you replace a sensor, rotate tires, or swap seasonal wheels, the system must “relearn” the sensor IDs to match their new positions. Without a relearn, the TPMS warning light stays on, and pressure readings show incorrectly.
Bisu models typically operate on 433MHz frequency (matching the BL-ST-014 sensor). The relearn procedure depends on the vehicle’s model year and ECU generation. Most Bisu cars from 2015 onward support auto relearn; older models often require OBD or stationary methods.
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Tools You May Need
| Tool | Purpose | Notes |
|---|---|---|
| TPMS scan tool (Autel, ATEQ, Bartec) | OBD relearn, read sensor IDs | Must support Asian vehicles |
| Magnet (strong rare-earth type) | Stationary relearn (trigger sensor) | Some models require 10,000+ Gauss |
| TPMS activator (315/433MHz) | Wake sensors during stationary relearn | Alternative to magnet |
| OBD-II scanner | Diagnose fault codes post-relearn | Optional but helpful |
| Tire pressure gauge | Set cold pressures before relearn | Always do this first |
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Method 1: Auto Relearn (Drive Cycle)
This is the simplest method—no tools required. It works on most Bisu models built after 2018.
- Inflate all tires to the pressures listed on the driver’s door jamb sticker.
- Start the engine and let it idle for 2 minutes.
- Drive the vehicle above 25 mph (40 km/h) continuously for 10–20 minutes.
- The TPMS light should flash for 30–60 seconds, then turn off steady once all sensors are recognized.
- If the light stays solid after driving, the auto relearn failed—move to Method 2 or 3.
Important: Auto relearn only works if the new sensors are already programmed with correct IDs and match the vehicle’s frequency (433MHz for Bisu).
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Method 2: OBD Relearn (Scan Tool Required)
This is the most reliable method for Bisu. Use a TPMS scan tool that supports “Asian” or “Chinese” vehicles.
- Connect the scan tool to the OBD-II port (under the dashboard, driver’s side).
- Select vehicle: Choose Bisu (or “Bisu” under “Chinese Domestic Brands”).
- Select function: “TPMS Relearn” or “Sensor Learn.”
- Trigger each sensor (using the tool’s LF activation or a separate activator) in this order: LF → RF → RR → LR (left front, right front, right rear, left rear).
- The tool will display “Learn Successful” after each sensor is recognized.
- Disconnect the tool and start the engine. The TPMS light should turn off within 1 minute.
Pro tip: If the tool doesn’t list Bisu, try selecting “Toyota” or “Lexus” as a fallback—many Bisu models share TPMS protocols with Toyota platforms. The BL-ST-014 | BH-Sens 433MHz TPMS Tire Pressure Sensor | Fits Lexus, Subaru, Toyota | OE# 28103CC010, 4260702060, 4260702070 (BL-ST-014) is designed to cross-reference these OE numbers, making it compatible with multiple Asian brands.
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Method 3: Stationary Relearn (Magnet or Activator)
Use this method when you don’t have a scan tool but the auto relearn fails.
- Park the vehicle on level ground, engine off.
- Set all tires to the correct cold pressures.
- Enter relearn mode (varies by model):
- For most Bisu models: Turn ignition ON (do not start) and press the brake pedal 5 times within 10 seconds. Or press the TPMS reset button (under the dash or inside the glove box) for 3 seconds until the horn beeps twice.
- Activate each sensor in sequence: LF → RF → RR → LR.
- Using a magnet: Hold the magnet directly against the tire sidewall near the valve stem for 5–10 seconds until the horn beeps once.
- Using an activator: Press the activator against the tire sidewall and press the trigger button.
- After the fourth sensor is activated, the horn should beep twice to confirm completion.
- Start the engine—the TPMS light should be off.
Note: If the horn doesn’t beep after 30 seconds on a wheel, move to the next wheel and retry at the end.
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Common Bisu TPMS Issues and Troubleshooting
- Light stays on after relearn: Check that all sensors are transmitting at 433MHz. Older Bisu models (pre-2015) may use 315MHz.
- Intermittent readings: Low battery in one sensor. Replace with a compatible unit like the BL-ST-014.
- No communication with scan tool: Confirm the OBD-II connector pins are clean. Try a different scan tool.
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Recommended Part
For Bisu owners needing a reliable 433MHz TPMS sensor, the BL-ST-014 | BH-Sens 433MHz TPMS Tire Pressure Sensor | Fits Lexus, Subaru, Toyota | OE# 28103CC010, 4260702060, 4260702070 (BH-Sens BL-ST-014) is a direct-fit option. It covers multiple OE numbers (28103CC010, 4260702060, etc.) and works with Toyota, Lexus, and Subaru platforms—meaning it’s tested against the same TPMS protocols Bisu uses. Always verify fitment with your specific Bisu model year.
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FAQ
How do I know if my Bisu uses 433MHz or 315MHz sensors?
Check the driver’s door jamb sticker for a TPMS frequency note, or remove the original sensor and read its printed label. Most Bisu models from 2010–2020 use 433MHz. If unsure, use a scan tool to read the original sensor’s frequency.
Can I reuse old TPMS sensors after tire rotation?
Yes, but you must perform a relearn so the ECU knows which sensor is in which position. Auto relearn works if you rotate tires without changing sensors. If you change the sensors themselves, you must program the new IDs into the ECU via OBD or stationary relearn.
Why does my TPMS light flash for 2 minutes then stay solid?
Flashing indicates the system is searching for sensors. A solid light means a fault exists—either a sensor is dead, missing, or transmitting the wrong frequency. Use a scan tool to read which sensor is not responding.
Do I need a special tool for Bisu TPMS relearn?
For auto relearn, no tool is needed. For OBD relearn, a generic TPMS scan tool (Autel, ATEQ) works if it lists Asian vehicles. For stationary relearn, you need a strong magnet (10,000+ Gauss) or a TPMS activator. Avoid cheap magnets from hardware stores—they may not be strong enough to trigger the sensor.