1998 Mercedes Benz E430FACTORY OEM SERVICE PROCEDURE

Control Units

CONTROL UNITS LOCATION

Component Location
A/C Push-Button Control Module Center of dashboard. See Figure .
AIR Control Module Left front of engine compartment. See Figure .
ASR/ETS/ESP Hydraulic Unit Left front of engine compartment. See Figure .
CC/ISC Control Module Under front passenger's foot plate.
Combination Control Module Right rear of engine compartment, in control module box. See Figure .
DAS Control Module Behind left side of dash. See Figure .
EA/CC/ISC Control Module Under front passenger's foot plate.
Electronic Ignition Lock Control Module Part of ignition switch. See Figure .
Engine/Climate Control Electric Cooling Fan Control Module Left front of engine compartment. See Figure .
Engine Control Module (ME-SFI Gasoline Engine) Right rear of engine compartment, in control module box. See Figure .
Engine Control Module (3.0L Diesel Engine) Right rear of engine compartment, in control module box. See Figure .
ESP/SPS Control Module Right rear of engine compartment, in control module box. See Figure .
ETS/SPS Control Module Right rear of engine compartment, in control module box. See Figure .
Front Driver-Side Door Control Module Inside driver-side door. See Figure .
Front HS Control Module Behind center of dash.
Front Passenger-Side Door Control Module Inside passenger-side door. See Figure .
Fuel Pump Relay Module (4.3L) Under rear seat. See Figure .
Garage Door Opener Control Module In left sun visor.
Headlight Range Adjustment Control Module Under left side of rear seat. See Figure .
Illumination Control Module Behind left side of dash, part of headlight switch.
In-Dash Controller Below radio in dash/center console.
Kickdown Cut-Out Relay Module Front passenger foot plate. See Figure .
Left Front ESA Control Module Under left front seat. See Figure .
Lower Control Field Control Module Behind driver-side kick panel. SeeFigure .
Preglow Time Limit Control Module Left front of engine compartment. See Figure .
PSE Control Module Under right rear seat. See Figure .
Pulse Module Left rear of engine compartment. See Figure .
RCL Control Module In front passenger's footwell. See Figure .
Rear Driver-Side Door Control Module Inside rear driver-side door. See Figure .
Rear Passenger-Side Door Control Module Inside rear passenger-side door. See Figure .
Relay Module With AIR Relay & Fuel Pump Relay Module Right rear of engine compartment, in control module box. See Figure .
Right Front ESA Control Module Under right front seat. See Figure .
Signal Pick-Up & Activation Module (SAM) Left rear of engine compartment, in driver-side relay and module box. See Figure .
SRS Control Module In front of transmission shift lever. See Figure .
Starter Lock-Out Relay Module Right rear of engine compartment, in control module box. See Figure .
Transmission Control Module Right rear of engine compartment, in control module box. See Figure .
Ultrasonic PTS Control Module Under rear seat. See Figure .
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.