Understanding the TPMS Warning Light on Your Chery EV
The Tire Pressure Monitoring System (TPMS) on a Chery Ev uses direct sensors inside each wheel. These sensors transmit pressure and temperature data via 433MHz radio frequency to the vehicle’s receiver. When the warning light stays on or flashes, the system has detected a fault, not necessarily low pressure.
Common Chery EV TPMS fault codes (retrievable with a TPMS tool):
- U0121 (Lost communication with TPMS module)
- C0750 (Sensor not detected)
- Low battery voltage per sensor
Three Main Causes of TPMS Warning Light on Chery EV
1. Dead Sensor Battery (Most Common)
Each TPMS sensor contains a non-replaceable lithium battery designed to last 5-7 years. If your Chery EV is a 2018 or earlier model, battery failure is likely.
Symptoms of a dead sensor battery:
- Warning light comes on intermittently, then stays solid
- One tire shows no pressure reading on the dashboard
- The light blinks for 60–90 seconds after starting, then stays on
Diagnostic test: Use a TPMS trigger tool (like an Autel or Bartec) to wake each sensor. If a sensor doesn’t respond or shows a battery voltage below 2.0V, it needs replacement.
2. Signal Interference from Aftermarket Accessories
Chery EVs are sensitive to radio frequency (RF) noise from aftermarket electronics. Common culprits:
- LED license plate lights or interior lights
- Dashcam power supplies (especially cheap 12V-to-USB adapters)
- Aftermarket LED headlight bulbs
- Phone chargers plugged into the 12V socket
How to test for interference:
- Turn off all aftermarket electronics.
- Clear the TPMS fault codes with a scan tool.
- Drive the car for 10 minutes at speeds above 25 km/h.
- If the light stays off, re-enable accessories one by one until the light returns.
If interference is confirmed, relocate or replace the offending device. Ferrite chokes on power cables can help.
3. Physical Sensor Damage or Incorrect Installation
Chery EV sensors are clamp-in type. They can be damaged during tire changes if the technician does not use a TPMS-safe tire machine.
Signs of physical damage:
- A sensor that reads “0 psi” or “no data” even after battery replacement
- Cracked or corroded sensor housing (inspect through the tire valve stem)
- Loose valve stem nut (check torque: typically 4–6 Nm—verify in your manual)
TPMS Sensor Compatibility for Chery EV
Not all 433MHz sensors work with Chery EV. The system requires a sensor that matches the original OE frequency and protocol. Below is the fitment data for the BH-Sens BL-ST-074 sensor:
| Vehicle Model | Year Range | OE Part Number Reference |
|---|---|---|
| Chery EV (eQ1 / Little Ant) | 2017–2023 | 11652AWARDKS |
| Chery EV (eQ5 / Ant) | 2020–2023 | 802000012AA |
| Chery Tiggo EV | 2019–2023 | 11652AWARDKS |
| Cowin EV (related model) | 2018–2022 | 802000012AA |
Always verify your VIN with the supplier. Non-listed years may require a different frequency or protocol.
Step-by-Step Troubleshooting Guide
- Check tire pressures with a gauge—inflate all tires to the door sticker value (typically 2.3–2.5 bar / 33–36 psi for Chery EV).
- Reset the TPMS (if equipped): On most Chery EVs, press and hold the TPMS reset button (under the steering wheel or in the glovebox) for 3 seconds after adjusting pressures. Drive 10 minutes.
- Scan with a TPMS tool: If the light returns, use a universal TPMS tool to read sensor IDs and battery voltages.
- Replace faulty sensors: If battery voltage is low or sensor isn’t detected, replacement is the only option. The BL-ST-074 | BH-Sens 433MHz TPMS Tire Pressure Sensor | Fits Chery, Chery Ev, Cowin | OE# 11652AWARDKS, 802000012AA is pre-programmed for Chery EV—no cloning required.
Recommended Part
For a reliable, direct-fit replacement:
- Brand: BH-Sens (Baolong Technology)
- Frequency: 433MHz
- Type: Clamp-in, pre-programmed
- OE numbers: 11652AWARDKS, 802000012AA
- Covers 9 Chery EV and Cowin applications
This sensor matches the original factory specification and will sync automatically with your Chery EV’s TPMS module after a short drive.
FAQ
How long do Chery EV TPMS sensor batteries last?
Most Chery EV TPMS sensor batteries last 5–7 years from the vehicle’s production date. Cold climates and frequent short trips can shorten battery life to 4–5 years.
Can I replace only the battery in a Chery EV TPMS sensor?
No. TPMS sensors for Chery EV have sealed, non-serviceable batteries. The entire sensor unit must be replaced. Attempting to open the sensor will damage it.
Why does my Chery EV TPMS light flash for 60 seconds then stay on?
This is the standard fault indication pattern for Chery EV. A flashing light for 60–90 seconds after startup indicates a system malfunction (dead sensor, missing sensor, or no signal). A solid light means low pressure. If tire pressures are correct, the issue is almost certainly a sensor battery or signal interference.
Will aftermarket LED bulbs cause TPMS interference on Chery EV?
Yes, especially low-quality LED headlight bulbs or LED license plate lights. The switching power supplies in these bulbs can emit RF noise on the 433MHz band. Use quality shielded LEDs or add ferrite chokes to the wiring.