BYD Dolphin Tyre Pressure Warning: Reset and Fault Guide
The BYD Dolphin has no hidden TPMS reset button. To clear a low-pressure warning, inflate all four tyres to 250 kPa cold and drive, and the system updates itself within minutes. If readings look scrambled after a tyre rotation or new rims, the fix is TPMS re-matching at a BYD dealer, the step most owners miss. A flashing-then-solid light with "No Signal" is a fault for the dealer, not a reset.
TPMS Warnings at a Glance
| Measurement | Detail |
|---|---|
| Reset button | None, the system self-clears once pressures are right |
| Low-pressure trigger | Any tyre below 80% of standard, about 200 kPa |
| Temperature alarm | Any tyre above 85 degrees for 3 consecutive minutes |
| Fault display | Flashing then solid light, "No Signal" or "Please check TPMS" |
| After wheel work | Re-matching at a BYD dealer |
What the Warning Is Telling You
The Dolphin's direct TPMS speaks three distinct languages, and reading the right one saves a wasted trip.
- Low pressure: The warning light comes on and the affected tyre's value turns yellow on the cluster when it drops below 80 percent of the 250 kPa standard, so a yellow number means real air loss, roughly a fifth of the tyre's pressure gone
- High temperature: A tyre running above 85 degrees for three consecutive minutes raises the temperature alarm, and the manual's advice is to stop and let it cool before continuing
- System fault: A light that flashes and then stays solid, with "No Signal" or "Please check TPMS" and dashes where values should be, means the monitoring system itself has the problem
The full threshold chart, with every figure in kPa, psi, and bar, lives in our Dolphin tyre pressure and TPMS chart.
The Cause Table: Why the Light Is On
| Measurement | Likely cause | The fix |
|---|---|---|
| Light on, one value yellow | That tyre is below about 200 kPa | Check for a puncture, inflate to 250 kPa, drive to clear |
| Light on a cold morning, clears later | Overnight temperature drop lowered pressures | Set pressures cold to 250 kPa, adjusting with the seasons |
| Light still on right after inflating | The system has not re-read the tyres yet | Drive for a few minutes and let it update |
| Readings in the wrong positions after a rotation | Sensors are matched to their old corners | TPMS re-matching at a BYD dealer |
| Warning after new rims, tyres, or sensors | The system does not know the new hardware | Re-matching at a BYD dealer |
| "No Signal" or dashes, solid light | Sensor or system fault, or electrical interference | Remove non-approved accessories, then see a dealer |
| Temperature value yellow | A tyre above 85 degrees for 3 minutes | Stop, cool, then check pressure and condition |
The Honest Reset Steps
Plenty of guides invent a reset ritual. The manual's truth is simpler: fix the cause, and the system clears itself. Here is the sequence.
- Open the tyre screen: Press the steering wheel's cluster button and scroll to the tyre pressure display for live per-tyre values
- Measure cold and correct: Set all four tyres to 250 kPa with a trusted gauge, before driving warms them
- Investigate any straggler: A tyre that keeps losing air has a puncture or valve issue, not a display problem
- Drive and let it update: The system re-reads on the move, and the light extinguishes once every tyre reports healthy
- Escalate what remains: Scrambled positions mean re-matching, and fault messages mean a dealer inspection
The Fix Most Owners Miss: Re-Matching
Here is the roadmap's headline, straight from the manual: the tyre pressure monitoring system needs to be matched again after wheel rim replacement or tyre rotations, at a BYD authorised dealer or service provider.
The symptom is unmistakable once you know it. After a rotation, the cluster shows a front tyre's pressure at a rear corner, or a warning follows a wheel that just moved. Owners replace sensors, swap valves, and chase phantom leaks, when the sensors are simply introducing themselves from the wrong corners. One re-match at the dealer, ideally booked with the rotation itself, and the display tells the truth again.
Since the manual schedules rotations every 10,000 km, the smart habit is pairing every rotation with a re-match request, so the problem never appears at all.
The Interference Wildcard
One more manual note that solves mystery faults: non-approved electrical accessories can interfere with the system's readings. If "No Signal" appeared after fitting an aftermarket electronic gadget, unplug it before assuming a sensor has died, and choose approved accessories thereafter.
The One Tool That Prevents Most of This
A quality pressure gauge for your Dolphin makes the monthly check a one-minute habit, catching slow leaks before the 80 percent threshold ever trips. Pair it with the correct sizes and pressures in our Dolphin tyre size and pressure guide, and the warning light becomes something you almost never see.
Common Mistakes
- Hunting for a reset button: There is none, correct pressures clear the light
- Expecting an instant clear: The system needs a few minutes of driving to re-read
- Chasing phantom leaks after a rotation: Scrambled positions need re-matching, not new sensors
- Skipping the re-match with new rims: New hardware must be introduced at the dealer
- Ignoring a cold-morning pattern: Seasonal drops call for a cold-set top-up, not alarm
- Dismissing the interference note: A new gadget and a new fault are rarely coincidence