Specification. Type: Control Unit Module Mounting type:direct mount Material type:metal+ABS Color: silver+black Features. High . Easy to install and long-lasting use. Good quality and good applicability. The right connector, no cutting or splicing required. Gives your car a sharper and more sophisticated look. of Application. A1769004104 Control Unit Module for W156 X290 Part Number: A176 900 09 01 a176 900 12 04 a176 900 40 04 a176 900 41 04 A176 900 87 03 A176 900 91 03 A176 900 92 03 Fit For Vehicle Models: For A/CLA Class 2013-2019 W156 For GLA X156 2017 up For X290 2018 up Package Contents: 1 x Control Unit Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.