GAP IIDTool G3 BT Land Rover Diagnostic Scanner II BT

The GAP IIDTool G3 BT, part number II BT, is GAP Diagnostic's Bluetooth diagnostic tool for Land Rover and Range Rover, and it is the right generation for Rovers built before the switch to DoIP. It plugs into the OBD2 port, pairs to the free IIDControl app on your phone, and reads and clears faults across every system on the vehicle rather than the handful a generic code reader can see.

Read this part before you buy. From 2020 onward some Land Rover modules communicate only over Diagnostic over IP, and the G3 does not carry the hardware for it. If your Rover is a 2020 or newer, the G4 is the tool you want. The G3 is built for everything before that, and it is the only one of the two that supports the classic Defender L316.

What it does goes well past reading codes. Fault read and clear across all vehicle systems. Live data, so you can watch a value move instead of guessing at it. Service routines including the service reminder reset. Manual component activation, so you can command an output and find out whether the part or the wiring is at fault.

Then there are the advanced programming functions, which are why most people buy one of these. Air suspension height adjustment with a guided calibration routine, so you can drop it for the road and lift it for the trail. ECU work. CCF editing, where you change how the vehicle behaves, things like daytime running lamps and seatbelt chimes. These functions are VIN locked, meaning they are enabled on the Rover you register the tool to. One license is included, and more can be added later for a fee if you look after another vehicle.

In the box you get the IIDTool G3 Bluetooth module, a USB update cable, a quick start guide, one free VIN license, and access to firmware updates. The IIDControl app is free on iOS and Android. GAP is direct about phones, and so are we. Budget handsets often struggle with it, so use a reputable device.

One thing worth knowing before you activate. Once the tool is tied to a VIN, that pairing is permanent, so confirm compatibility with your Rover before you register it.

FAQ

Which Rovers does the G3 work with?

The full list is below. In short it covers the classic Defender L316, Discovery 3 and Discovery 4, Freelander 2, Range Rover L322 and L405, Range Rover Sport L320 and L494, and the Evoque L538. If your Rover is a 2020 or newer, look at the G4 instead.

Should I get the G3 or the G4?

It comes down to the year. From 2020 onward some Land Rover modules communicate only over Diagnostic over IP, and the G3 carries no DoIP hardware, so it cannot reach them. For anything built before that the G3 is the right tool, and it is the only one of the two that covers the classic Defender L316.

Can I use it on more than one vehicle?

The advanced programming functions are VIN locked, so they are enabled on the Rover you register the tool to. One license is included and more can be added later for a fee. Keep in mind that once the tool is tied to a VIN that pairing is permanent, so confirm compatibility before you register it.

Fits:
Defender L316 (2007 to 2015)
Discovery 3 LR3 L319 (2005 to 2009)
Discovery 4 LR4 L319 (2010 to 2016)
Freelander 2 LR2 L359 (2007 to 2015)
Range Rover L322 (2006 to 2012)
Range Rover L405 (2013 to 2016)
Range Rover Sport L320 (2005 to 2013)
Range Rover Sport L494 (2014 to 2016)
Range Rover Evoque L538 (2011 to 2017)

Part Number: II BT
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