Factory build data by VIN

Mercedes-Benz Code U22
(4-Way Electro-Pneumatic Lumbar Support)

4-Way Electro-Pneumatic Lumbar Support is classified under the Interior Comfort category.

Code U22 — Pneumatically adjustable support cells inside the front seat backrests for lumbar posture tuning.

Is this option package genuinely original or a cheap aftermarket replica? Enter your VIN below to fetch the factory build sheet and protect your investment.

🚨 Avoid Retrofit Frauds:Always decode the VIN configuration rather than relying on visual trims. Some sellers fit visual replicas (such as speaker covers or AMG body panels) on standard vehicles to charge a premium. A genuine datacard decode matches the vehicle's manufacturing specifications on the day it rolled off the assembly line.

Check if your Mercedes has code U22

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Specification & Capabilities

How code U22 appears in factory data

The text the factory data provider returns for this code, per series, in the VINs we have decoded. Shown as written, untranslated, and only for the series this page applies to. The same code can have another name in another series.

A-Class (W176): LUMBAR SUPPORT ADJUSTMENTProvider description

STANDARD CODE IDENTIFIERCode U22

EQUIPMENT CATEGORYInterior Comfort

Used Car Buyer Checklist: Code U22

Adjusted using a circular 4-way direction switch on the side of the seat base. Listen for air pump operation when holding the button. Ensure there are no air leaks causing the bolster to deflate after long drives.

Mercedes-Benz Models Frequently Optioned with Code U22

W176A-Class W204C-Class R231SL-Class W246B-Class X156GLA C207E-Class Coupe R172SLK / SLC