Audi A8 MMI Screen Repair Kit Replacement Gear 4E0857273D

When the display (screen) on your Audi A8/S8 no longer opens properly, jams or is making strange noises then the likely culprit is one of the three plastic gears, which often break or are excessively worn. Most of the time these gears fail in a specific order (1, 3 and then 2).

Certified Audi service facilities always resolve this problem by replacing the entire mechanism at a price of 500 – 600 USD.

This repair kit is improve version made by high durable material of copper, it include 3pcs gear wheel.
If your MMI screen stuck closed, not full open or there are grinding noise when it moving that indicated your MMI gear or gears are broken.
The original gear is made by plastic, their weakness and liable to deteriorate, leading to broken teeth after a long term.

We’ve long looked for an ideal material to produce these repair kits. We used special bronze alloy for quiet and smooth operation to give our product a truly lifetime guarantee without lubrication.

The combination of bronze with plastic or steel is functional only for a short time.

Audi A8 (2003-2007) MMI swivelling unit repair manual