VW T6 / T6.1 VB Air Suspension Failure: Converting Back to Conventional Springs and Dampers

The Problem

On affected vans the VB Air Suspension airbags repeatedly separate from the top mounts. Each corner replacement runs to around £1,250 plus VAT, and parts lead times stretch to 8–10 weeks through the VB dealer network. Once you have had the system repaired two or three times, the combination of poor parts availability and per-corner repair cost above £1,000 makes the air setup hard to justify for everyday use. Note that fitment and suspension geometry differ between the T6 (2015–2019) and the T6.1 (2019–present), so a kit or component that suits one generation will not necessarily bolt straight onto the other — confirm this applies to your T6 generation before ordering anything.

Solution

1. Decide whether to convert. If you have had two or more VB airbag failures, treat the system as unreliable for your use case rather than continuing to repair it.

2. Source a conventional spring-and-damper kit for your exact vehicle. You need springs and dampers rated for your van's gross vehicle weight and front/rear axle loads — check the GVW and axle plate in the door shut or under the bonnet, and match the springs to whether the van runs standard or uprated/heavy payload (e.g. Kombi vs panel van conversion). Reputable suppliers of T6/T6.1 suspension components include Eibach, Bilstein, KW/ST and H&R, all of whom list platform-specific kits; many of these are sold as matched lowering or load-rated kits. (Verify part numbers before ordering — confirm the listing specifies T6 2015–2019 or T6.1 2019–present and the correct payload rating, as the two generations differ.)

3. Removal procedure (DIY outline). Park on level ground, chock the wheels, and fully depressurise the air system before touching anything. Loosen the wheel bolts, raise the van and support it on axle stands rated for its weight, then remove the wheels. Disconnect and cap the air lines and any electrical connectors to the air struts/bags, and isolate the compressor and control module. Support the lower arm/axle with a trolley jack, then unbolt the air strut or bag assembly top and bottom and lift it out. Fit the conventional spring/damper unit in the reverse order. Use new top mount fixings where specified, and torque all suspension fasteners to the figures in the VW workshop data for your model — strut top mount and lower mounting torques are safety-critical and vary by generation, so verify them with the manufacturer or a VW specialist before final tightening (do not guess these). After fitting, have the wheel alignment (tracking and, where applicable, camber) checked and reset.

4. If you are not comfortable doing the work yourself, have it carried out by an independent VW T-platform suspension specialist or a VW-experienced garage. Get more than one quote and confirm they will set ride height and alignment correctly afterwards; do not rely on a single personal recommendation.

5. Rear-only VB compromise. If you want self-levelling for variable loads, you can retain the VB bags on the rear axle only while running conventional springs at the front. This can handle changing payloads better than a fixed spring, but it is only worthwhile if the rear VB components and control settings are compatible with a front conventional setup, the system is recalibrated to the correct rear ride height, and the bags are rated for your rear axle load (check the axle plate). Confirm compatibility, ride-height calibration and load rating with VB or a VB-approved fitter before going this route, and have the alignment checked afterwards.