Zonar LD TCU Troubleshooting

Possible reasons:

• The asset was not created in Ground Traffic Control before installation, and the data is instead showing on an auto-created asset.
• During installation, the vehicle engine turned off or the vehicle moved before both LEDs turned solid.
• The vehicle was not driven after both LEDs turned solid.
• The vehicle is 2007 or older and is not compatible with the LD TCU.

Performing a soft reboot as described in the LD TCU Manual should alleviate any data issues not resulting from incompatibility.

If the device was installed more than 7 days ago, perform a hard reboot instead.

When the LD TCU is installed, it must download and process software updates which may interfere with data collection. Data after 24 hours should be correct.

The label on the device may include a leading 0 in the IMEI (for example, 016042000001911) that is not present in the same ID in Ground Traffic Control (for example, 16042000001911). When searching for the ID, make sure to drop the leading 0.

The GPS and ECM flags were designed with Zonar's Vx family of GPS units in mind. The LD TCU operates slightly differently, resulting in the different values.

• ECM: Occurs when the LD TCU is sending ECM-specific data. This only occurs when the vehicle is idling.
• GPS: Occurs when the LD TCU is sending GPS data while in motion.

For analytical purposes, if the ECM flag is present at all in the CSV export, the odometer values in Ground Traffic Control are considered to be derived from the ECM.

The LD TCU device sends a phone home heartbeat every two (2) hours only when:

• The engine is off.
• The vehicle battery voltage is 12.0V or higher.

Depending on the vehicle's use conditions, this may result in an older than expected phone home timestamp.

There is a very rare chance for data to be inserted in Ground Traffic Control out of order. Zonar is actively engaged in minimizing and eliminating this chance.

Perform a soft reboot as described in the LD TCU Manual.

Perform a hard reboot as described in the LD TCU Manual.

Perform a hard reboot as described in the LD TCU Manual.

The green LED indicates cellular connectivity.

Possible causes of failure to light include:

• The vehicle's engine has just turned on. Allow up to 5 minutes for LED to light up.
• The vehicle is inside a metal, concrete, or underground structure which is preventing a cell signal. Move the vehicle outside.
• The vehicle is in an area with poor cellular coverage. Move the vehicle to an area with known good coverage.

The blue LED indicates power status. Possible causes include:

• The vehicle's engine is not turned on. The blue LED should begin blinking when the engine is turned on.
• The TCU is not fully connected. Follow the Installation instructions to ensure a proper connection.

The blinking blue LED status indicates GPS configuration. Possible causes include:

• The vehicle's engine has just turned on. Allow up to 5 minutes for LED to turn solid.
• The TCU is incompatible with the vehicle. The TCU is only supported for vehicles of model year 2008 and newer.
• The device is no longer bound. Follow the hard reboot steps to correctly bind the device to the vehicle.

In some cases, LD TCU may interfere with FordPass® functionality (for example, remote start and remote door unlock may not function while LD TCU is installed). Full functionality is restored when LD TCU is removed. If any required FordPass® features are not working on a specific vehicle, Zonar recommends using a Zonar V4 TCU with 4-pin connector on the specific vehicle.

Using a V4 + 4-pin connector does not provide ECM odometer or DTC functionality.