Mercedes Benz W211 Diagnostics Problems

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Revision as of 17:04, 29 June 2026 by Mol (talk | contribs) (→‎Airmatic)

Introduction

See also Mercedes Benz diagnostics obd

See https://charm.li/Mercedes%20Benz/2003/E%20320%20Wagon%20%28211.265%29%20V6-3.2L%20%28112.949%29/

Airmatic

Problem: 5343 y36/4

Check AIRmatic for leaks pdf file

  • Y36/6: AIRMATIC valve unit
  • Y36/6b1 AIRMATIC pressure sensor
  • Y36/6y1 Left front level control valve
  • Y36/6y2 Right front level control valve
  • Y36/6y3 Left rear level control valve
  • Y36/6y4 Right rear level valve
  • Y36/6y5 AIRMATIC central reservoir filling valve

Good discussion: https://mbworld.org/forums/e-class-w211/918482-self-leveling-rear-suspension.html

  • Eg: Control unit is under the passenger footwell (the carpet up, remove nuts to pull the steel plate). Check this: https://mbworld.org/forums/e-class-w...ml#post8748801 Only relay is for the pump, it's in the engine bay, fuse box on the drivers side corner. Fuse #45 is for the control unit, diagram for fuses is here: https://fuse-box.info/mercedes-benz/..._box_diagram-3
  • Checked Voltage on rear level sensor and it goes from 2.8 to 4.9 and it’s on 4.9 when it’s dropped, using a jack.
  • the leveling sensor in the rear was on the middle of the sway bar! (kallistuksenvakaaja)
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