> For the complete documentation index, see [llms.txt](https://help.pd1.sg/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.pd1.sg/pd-tyre/pd-tyre-troubleshooting.md).

# PD-Tyre Troubleshooting

Resolve common PD-Tyre issues.

Resolve common PD-Tyre setup and sensor issues.

## Quick checks

Before digging into a specific error, confirm:

1. The PD-Tyre receiver box is powered on and near the phone.
2. Phone **Bluetooth** and **Location** are turned on.
3. You are logged in to **Proteus Diagnostics**.
4. A vehicle is selected in the app.
5. Wheel sensors are installed and paired (see [Installing PD-Tyre](/pd-tyre/installing-pd-tyre.md) and [Pairing the Sensors](/pd-tyre/pairing-the-sensors.md)).

{% hint style="info" %}
Location is required for Bluetooth scanning. If Location is off, the app shows: *Location is required to connect to Bluetooth. Please enable it.*
{% endhint %}

## Cannot find or connect PD-Tyre

### Symptoms

* **No Devices Found** during search
* **TPMS connect failed**
* **TPMS box not connected**
* **Connecting…** never finishes
* Status stays **Disconnected** / **Not Connect**

### What to try

{% stepper %}
{% step %}

### Power and range

Turn the PD-Tyre box on. Keep it within a few metres of the phone. Move away from other Bluetooth clutter if needed.
{% endstep %}

{% step %}

### Enable Bluetooth and Location

Turn both on, then open **Profile** → **PD-Tyre** → **Connect TPMS** (or **Search Device**).
{% endstep %}

{% step %}

### Retry the scan

If nothing appears, tap **Scan** / **Search Device** again. Wait for the search animation to finish.
{% endstep %}

{% step %}

### Re-link if the serial number is missing

If you see **PD-Tyre serial number is missing. Please re-link the device.**, remove the stale entry if needed and connect again with **Connect TPMS**.
{% endstep %}
{% endstepper %}

{% hint style="info" %}
If this vehicle also has a **PD-Display** and the app asks for the display first, finish **Connect Display**, then continue. Live tyre data may come through PD-Display.
{% endhint %}

## Unable to Bind Device

### Symptom

Search finds the box, but you see **Unable to Bind Device** and *already connected to another user.*

### What to try

1. Confirm you are logged in with the account that owns this PD-Tyre.
2. On the other account, open **Profile** → **PD-Tyre** → device → **Delete PD-Tyre** to unbind it.
3. Return to your account and tap **Connect TPMS** again.

{% hint style="warning" %}
A PD-Tyre box can only be linked to one account at a time.
{% endhint %}

## Connected, but no live tyre data

### Symptoms

* **No live tire pressure data yet. Connect PD-Tyre or PD-Display first.**
* **No TPMS data**
* **Please connect PD-Tyre for tire pressure data**
* **Please connect PD-Display for tire pressure data**
* Wheel cards show `-` / `--`

### What to try

| Situation                   | Action                                                                     |
| --------------------------- | -------------------------------------------------------------------------- |
| No PD-Tyre on this account  | Tap **Connect TPMS** (or buy/connect hardware)                             |
| PD-Tyre exists but not live | Connect TPMS; keep the box powered                                         |
| Same vehicle has PD-Display | Connect PD-Display when prompted — data may be relayed through the display |
| Sensors not paired          | Open **Sensor IDs** and Learn / enter IDs for FL–RR                        |
| Only some wheels empty      | Re-pair that wheel; check sensor battery (**LOW**)                         |

Also confirm the PD-Tyre is bound to the **current vehicle** (**Connect the vehicles** on the device page).

## Pairing / Learn fails

### Symptoms

* **Learn failed**
* **Scan FL: trigger that tire sensor (45s)…** then timeout
* **FL: no sensor heard** / **No sensor heard for FL**
* **Bind failed, check box power**
* **Need 6 hex digits (0-9, A-F)**
* **Bind failed**

### What to try

{% stepper %}
{% step %}

### Stay connected

If you see **Please connect PD-Tyre first** or **Not connected — cannot bind**, connect TPMS, then open **Sensor IDs** again.
{% endstep %}

{% step %}

### Retry Learn on one wheel

Open **FL** (or the empty wheel) → tap **Learn** → trigger **only that** wheel’s sensor while the app is listening → tap **Confirm**.
{% endstep %}

{% step %}

### Enter the ID manually

If Learn keeps timing out, type the 6‑character ID from the sensor housing (`0–9`, `A–F`) and tap **Confirm**.
{% endstep %}

{% step %}

### Check box power

For **Bind failed, check box power**, power-cycle the receiver, reconnect, and try again.
{% endstep %}
{% endstepper %}

{% hint style="info" %}
After tyre rotation, Sensor IDs may no longer match FL / FR / RL / RR. Re-pair or re-enter IDs for the new positions.
{% endhint %}

## Cannot edit Sensor IDs or Alert Threshold

### Symptoms

* **Please connect PD-Tyre first**
* **Sensor IDs are synced from PD-Display. Edit them on the Display.**

### What to try

1. Connect PD-Tyre (App Bluetooth) when the phone owns the link.
2. If IDs are managed through PD-Display, edit them on the display as the message says.
3. Keep the box powered until the save toast appears (for example **Low pressure saved**).

## Wrong vehicle or Tire Profile cannot be saved

### Symptoms

* **Select a vehicle for this PD-Tyre**
* **Connect or buy a PD-Tyre to save tire profiles on this vehicle.**
* **Reassign your PD-Tyre to this vehicle to save tire profiles.**

### What to try

1. Open **Profile** → **PD-Tyre** → device → **Connect the vehicles** and pick the correct car.
2. On Tire Pressure Health, tap **Reassign PD-Tyre** if the box is linked to another vehicle.
3. Switch the app to the vehicle that owns the PD-Tyre, then edit **Tire Profile** again.

## Home keeps showing Tire pressure alert

### Symptom

Banner: **Tire pressure alert** — *Abnormal tire pressure or temperature detected*

### What to try

1. Open **Tire Pressure Health** and check which wheel is orange/red, or shows **LEAK** / **LOW**.
2. Verify real pressure with a gauge; inflate to the recommended cold pressure if low.
3. For **LEAK**, inspect the tyre and valve — do not ignore this flag.
4. For **BATTERY LOW**, plan to replace that wheel sensor.
5. Review **Alert Threshold** on the PD-Tyre detail page — thresholds that are too tight can trigger frequent alerts.
6. After a long drive, wait for tyres to cool before judging cold pressure.

{% hint style="info" %}
Opening Tire Pressure Health dismisses the current home alert fingerprint. The banner can return if the abnormal condition continues or changes.
{% endhint %}

## One wheel looks wrong

| Observation                           | Likely cause                      | Action                                   |
| ------------------------------------- | --------------------------------- | ---------------------------------------- |
| One wheel always empty                | Unpaired / wrong ID / dead sensor | Learn or enter ID; check **LOW** battery |
| One wheel much lower pressure         | Slow leak or recent service       | Inspect tyre; watch for **LEAK**         |
| Positions swapped after rotation      | IDs still on old corners          | Re-pair FL–RR to new positions           |
| Hot pressure higher than cold profile | Normal heat rise                  | Compare when cold                        |

## Delete or disconnect PD-Tyre

On **Profile** → **PD-Tyre** → device (⋯ menu):

* **Disconnect** — ends the phone’s Bluetooth link to the box (when the app owns that link).
* **Delete PD-Tyre** — removes the device from your account so another account can bind it.

{% hint style="warning" %}
Delete only if you intend to unbind the hardware from this account. You will need **Connect TPMS** again to use it here.
{% endhint %}

## Still need help?

1. Note the exact on-screen message and your PD-Tyre serial number (SN).
2. Confirm whether you use PD-Tyre alone or with PD-Display on the same vehicle.
3. [Contact PD-1 Support](/help-and-troubleshooting/contact-pd-1-support.md) with those details.

Related guides: [Getting Started with PD-Tyre](/pd-tyre/getting-started-with-pd-tyre.md), [Installing PD-Tyre](/pd-tyre/installing-pd-tyre.md), [Pairing the Sensors](/pd-tyre/pairing-the-sensors.md), [Understanding Tyre Data](/pd-tyre/understanding-tyre-data.md).


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