Thread: Gap IID G4 vs G3

Also if anyone has one that they'd like to sell please PM me.

Originally Posted by Darren LR3

...am weighing up a G4 vs. a G3. I am wondering whether anyone has found any practical difference between them, I have a LR3 but might possible get an LR4 in the future. Any advice is appreciated.

If you look on the GAP website you will see a table outlining compatibility differences between the various LR models for the 3 & 4 generations of the GAP tools.

Originally Posted by Ferret

If you look on the GAP website you will see a table outlining compatibility differences between the various LR models for the 3 & 4 generations of the GAP tools.

Hi, many thanks for taking the time to reply. Yep I've had a look and they look pretty similar for my purposes, I was more interested if anybody had found any practical use differences or oddities.

Cheers

The G4 can't access some or possibly all the ecus on vehicles prior to around MY17 or MY18 unless either the special OBD adapter is used or IIRC 2 wires are cut/removed from the OBD port of earlier vehicles. This is because those wires are used for a new OBD protocol used by some modules in the later vehicles.

Wires were cut in a D4's OBD port to allow my G4 (purchased for my MY21.5 L405) as the required function wasn't available on the G2 tool and I wasn't going to buy a G3 tool which had the option just to do this particular calibration nor to buy the adapter.