Defender Commercial Window Activation for Land Rover 90 & 110

If you've converted your Land Rover Defender 90 Commercial or Defender 110 Commercial from a two-seat van into a 5 seater, your vehicle may require window activation for the rear electric windows to function correctly.

At Hamilton Jarvis, we are the UK's leading specialists in Land Rover Defender Commercial rear seat conversions, offering professional Defender window activation using manufacturer-level diagnostic equipment. We complete hundreds of Defender conversions every year and understand every stage of the process, from genuine seat installation through to software coding and vehicle configuration.

Whether you've had your seats fitted by us or another installer, we can activate your rear windows quickly and correctly.

What is Defender Window Activation?

Commercial Defenders leave the factory configured as two-seat commercial vehicles. Even after genuine rear doors, regulators and wiring have been installed, the vehicle's software often still disables the rear electric windows.

Window activation involves:

• Programming the Body Control Module (BCM)
• Enabling rear electric window functionality
• Configuring the vehicle for the installed hardware
• Checking correct operation after programming
• Ensuring all window switches communicate correctly

Without this activation, the rear windows may not operate despite everything being physically installed.