GAP IIDTool BT G3 Bluetooth Diagnostic Tool TFIIDBT
£553.25 inc. UK VAT
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If you run a modern Land Rover, a basic code reader only scratches the surface. The GAP IIDTool BT G3 is a small Bluetooth module that plugs into the OBD socket and gives you deep access to the electronics in your Defender, Discovery or Range Rover using an app on your phone, tablet or laptop. This G3 version is the one you want if you have a
Defender Puma (2.4 or 2.2 TDCI)
or one of the earlier platform vehicles up to around 2016. One tool will talk to several different models, but once you unlock the “heavy-duty” programming features they are tied (VIN-locked) to a single vehicle – ideal if you mainly look after your own truck but still want to help friends or customers with general diagnostics.
What you can do with it
- Read and clear fault codes from all the main systems – engine, gearbox, ABS, airbag, body, suspension etc.
- Watch live data streams while the vehicle is running, with multiple values on screen at once so you can see how everything interacts.
- Log data for later analysis when you’re chasing intermittent problems.
- Carry out routine workshop jobs such as service indicator reset on supported models.
- Trigger individual components (fans, valves, pumps, lamps and so on) to help confirm whether a fault is wiring, hardware or ECU-related.
- Perform various calibrations such as air-suspension heights and steering angle on the vehicles that support it.
Programming and customisation functions*
Where the IIDTool really earns its keep is in the more advanced side of things. On compatible vehicles you can:
- Update ECU software where GAP provide flash files
- Edit the car configuration (CCF) to switch features on or off or change how they behave
- Adjust air-suspension heights and create your own height profiles
- Recalibrate height sensors after suspension work
- Make certain engine-related changes such as EGR behaviour or speed limiter adjustments where the vehicle and ECU allow it
The exact feature set varies by model and by ECU, so if you need a specific function it’s worth double-checking the latest coverage notes before you commit.
Vehicle coverage – G3 hardware
The G3 unit is aimed at “pre-very-latest” vehicles and offers its strongest coverage on:
- Defender Puma L316 – 2007–2016
- Discovery 3 / LR3 L319 – 2004–2009
- Discovery 4 / LR4 L319 – 2010–2016
- Freelander 2 / LR2 L359 – roughly 2008–2015
- Range Rover L322 – 2002–2012
- Range Rover Sport L320 – 2005–2013
- Range Rover Evoque L538 and Range Rover / Range Rover Sport L405 / L494 – early model years, with more limited coverage on later cars
- Discovery Sport L550 and Discovery 5 L462 – basic and partial coverage only
For 2020-on models, and for full functionality on many 2017-on vehicles, the newer G4 hardware is the correct choice – the G3 is mainly for the earlier generation.
Why we rate the IIDTool BT G3
- Designed specifically around Land Rover platforms rather than being a universal reader
- Proper workshop-level access in a unit that lives happily in the glovebox
- Bluetooth link to your phone or tablet – no need for a dedicated diagnostic laptop in the vehicle
- Supported by regular firmware updates and detailed documentation from GAP
Important:
activating VIN-locked programming features may significantly reduce the resale value of the IIDTool. If those functions have been activated, any refund on cancellation may be reduced to reflect that loss in value. Please make sure you are ordering the correct version for your vehicle before activation. This does not affect your statutory rights if the product is faulty, misdescribed or not fit for purpose.
| Weight | 0.2 kg |
|---|---|
| Dimensions | 20 × 10 × 10 cm |
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Twinwoods 4x4 ships Land Rover parts across the UK and around the world. We regularly send parts overseas and use trusted tracked courier services so UK and international customers can order with confidence.
Standard UK shipments are normally sent with DPD. UK orders containing oils or fluids are normally sent with DHL where required, because some carriers restrict liquid shipments.
Worldwide delivery is available through DPD and DHL Express, depending on the destination, parcel size, weight and available courier services. Add the parts you need to your basket, enter your delivery address, and the checkout will show the available delivery options and prices before payment.
Free mainland UK postage and packaging is available on eligible orders over £99, subject to our delivery terms and conditions.
- Changed your mind within 14 days? UK and EEA consumers have statutory cancellation rights. Tell us within 14 days of receiving your order, then return the goods within the following 14 days.
- Need longer? Eligible products can be returned under our voluntary extended returns policy. Contact us within 60 days of delivery and, once the return has been agreed, send the goods back within 14 days.
- Extended returns must be unused, unfitted, complete and suitable for resale as new. Goods must be undamaged, unmarked and uncontaminated, with all components and accessories supplied and their original product packaging where this formed part of the supplied product.
- A £10 handling charge applies to extended returns. This is charged once per return consignment, regardless of how many eligible products are returned together. It does not apply where your statutory cancellation rights apply.
- Return carriage and safe packing are your responsibility for change-of-mind returns.
- Managed UK returns: where suitable, we can provide a convenient prepaid tracked return service with straightforward drop-off, proof of handover and tracking linked to your return. The cost will be advised before it is arranged and may be deducted from your refund.
- Please do not fit or attempt to fit a part unless you intend to keep it. Fitting, attempted fitting, contamination, damage or excessive handling can substantially reduce the value of the goods. A product which has been fitted or used will not normally qualify for our voluntary extended returns policy.
- Faulty, damaged or incorrectly described? Contact us first. We will advise the appropriate return method and will normally provide a prepaid return service or cover reasonable agreed return costs.
Returns – quick FAQs
How long do I have to return an item?
For UK and EEA consumers, statutory change-of-mind cancellation rights also apply: tell us within 14 days of receiving your order, then return the goods within the following 14 days.
Which products qualify for 60-day returns?
Products purchased for £250 or more are not automatically covered, although we may agree to accept them for return at our discretion. Eligibility is based on the price of each individual product rather than the total order value.
Is there a charge for an extended return?
This charge does not apply where the return is being made under your statutory cancellation rights.
Who pays return carriage?
If an item is faulty, damaged or incorrectly described, contact us first. Where return is reasonably required, we will normally provide a prepaid return service or cover reasonable return costs agreed with us.
What condition must an extended return be in?
Can I fit a part and then return it?
Once a part has been fitted or an attempt has been made to fit it, it may be marked, contaminated, damaged or otherwise unsuitable for resale as a new part. Fitted or used goods will not normally qualify for our voluntary extended returns policy.
Where statutory cancellation rights apply, handling beyond what is reasonably necessary to inspect the goods may result in a reduction to your refund if it has reduced their value.
What if the item is faulty?
Are any items excluded from 60-day returns?
Extended returns must also meet the condition requirements above. Statutory exclusions and any separate statutory rights continue to apply as set out in our full Terms & Conditions.
How do I start a return?
Please include your order number and a brief reason for the return. Do not send anything back until you have received the appropriate return instructions.
Buy with confidence: all new parts sold by Twinwoods 4x4 include at least 12 months manufacturer warranty against defects in materials and workmanship under normal use.
Some products and brands may include a longer warranty period where this is provided by the manufacturer. Where applicable, this will normally be stated on the individual product page or covered by the manufacturer’s own warranty terms.
Warranty cover applies to manufacturing defects. It does not cover misuse, incorrect fitting, competition use unless stated, contamination, modification, damage during installation, normal wear and tear, or failure caused by an unrelated vehicle fault. For certain components, proof of professional fitment may be required.
Warranty claims may require the part to be returned for inspection and/or supplier testing before the claim is accepted. Any advance replacement is discretionary.
Warranty remedies relate to the part itself, meaning repair or replacement, or refund if those are not possible. Warranty does not cover labour, removal or refitting, diagnostics, consumables, travel or other incidental costs.
This warranty is in addition to your legal rights and does not reduce those rights.
For full details, please see our Terms and Conditions.

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