Mercedes CLS 2014 Seat Motor Actuator Front Right O/S Adjuster Motor 0390203296

#73

Genuine Mercedes-Benz CLS C218 W218 Front Right O/S Electric Seat Adjustment Motor 0390203296

Genuine used Mercedes-Benz / Bosch electric front seat adjustment motor / actuator, removed from a 2014 Mercedes-Benz CLS C218/W218 front right seat.

This motor forms part of the electrically adjustable front seat mechanism and provides the drive for one of the seat adjustment functions.

On a UK right-hand-drive (RHD) vehicle, the front right seat is the Driver / O/S side.

Part Number: 0390203296

Bosch Number: 0 390 203 296

KEIPER Reference: 82584372-4

Alternative Reference: 825843724

Part Type: Electric Seat Adjustment Motor / Seat Actuator

Application: Powered Front Seat Adjustment

Position: Front Right

UK RHD Position: Driver / O/S

Vehicle Platform: C218 / X218

Donor Vehicle: Mercedes-Benz CLS

Donor Year: 2014

Manufacturer: Bosch / KEIPER / Mercedes-Benz Application

Condition: Genuine Used OEM Part

COMPATIBILITY

The 0390203296 / 0 390 203 296 motor is not exclusive to one CLS engine or trim level. It is used within electrically adjustable Mercedes seat assemblies, so engine size is generally less important than the seat design, motor number and drive mechanism.

MERCEDES-BENZ CLS C218 / W218 – APPROX. 2011–2018

Potential applications with the corresponding electrically adjustable seat include:

• CLS 220 BlueTEC / CLS 220 d

• CLS 250 CDI

• CLS 250 BlueTEC / CLS 250 d

• CLS 250 d 4MATIC

• CLS 300

• CLS 350

• CLS 350 CDI

• CLS 350 BlueTEC / CLS 350 d

• CLS 350 4MATIC

• CLS 400

• CLS 400 4MATIC

• CLS 500 / CLS 550

• CLS 500 / CLS 550 4MATIC

• CLS 63 AMG

• CLS 63 AMG 4MATIC

• CLS 63 AMG S / S-Model

The 0390203296 number is specifically documented on Mercedes CLS C218/X218 front-right seat assemblies, including a diesel C218/X218 donor, and is also advertised from a CLS550 application.

MERCEDES-BENZ CLS SHOOTING BRAKE X218 – APPROX. 2012–2018

Potential applications where the matching electric seat mechanism is fitted include:

• CLS 220 d Shooting Brake

• CLS 250 CDI / BlueTEC / d Shooting Brake

• CLS 250 d 4MATIC Shooting Brake

• CLS 350 CDI / BlueTEC / d Shooting Brake

• CLS 350 d 4MATIC Shooting Brake

• CLS 400 Shooting Brake

• CLS 400 4MATIC Shooting Brake

• CLS 500 Shooting Brake

• CLS 500 4MATIC Shooting Brake

• CLS 63 AMG Shooting Brake

• CLS 63 AMG S Shooting Brake

ADDITIONAL MERCEDES-BENZ APPLICATIONS

The same 0390203296 / 0 390 203 296 motor is documented outside the CLS range.

Potential applications include selected:

Mercedes-Benz E-Class W212 Saloon

• E200

• E220 CDI / BlueTEC

• E250 CDI / BlueTEC

• E300

• E300 BlueTEC

• E350

• E350 CDI / BlueTEC

• E400

• E500 / E550

• E63 AMG

Mercedes-Benz E-Class S212 Estate

• E200

• E220 CDI / BlueTEC

• E250 CDI / BlueTEC

• E300

• E350 / E350 CDI / BlueTEC

• E400

• E500

• E63 AMG

• Selected other electrically adjustable seat specifications

The motor is directly documented on a 2012 RHD S212 E350 CDI front-right seat.

Mercedes-Benz S-Class W221

• Selected S-Class electrically adjustable front seats

• S280 / S300 – configuration dependent

• S320 CDI / S350 CDI

• S350

• S400

• S450

• S500 / S550

• S600

• S63 AMG

• S65 AMG

• Exact seat specification must match

IMPORTANT: These are potential applications for the 0390203296 motor family, not a claim that every seat in every model listed uses this motor.

FRONT RIGHT / DRIVER / PASSENGER INFORMATION

The physical position should be described primarily as:

FRONT RIGHT SEAT

For a UK RHD Mercedes CLS:

Front Right = Driver / O/S

For a European/US LHD vehicle:

Front Right = Passenger Side

This is important for international buyers because listings may describe exactly the same right-hand seat motor as either driver or passenger, depending on steering-wheel position.

TECHNICAL INFORMATION

This component is an electric drive motor installed within the powered front-seat frame.

When the relevant electric seat switch is operated, the seat electronics command the motor to rotate.

Its rotational movement is transferred through the corresponding seat drive mechanism to move the seat or seat section.

Depending on its exact installation position, the system can incorporate:

• Drive shaft

• Flexible drive cable

• Reduction gearing

• Seat adjustment spindle

• Seat rail mechanism

• Seat frame linkage

• Seat control electronics

The same front seat contains several different adjustment motors, so 0390203296 should be identified by its number and physical mounting arrangement rather than assuming compatibility based solely on the vehicle model.

ELECTRIC SEAT SYSTEM INFORMATION

Mercedes CLS C218/X218 front seats can be equipped with multiple electrically controlled functions, including:

• Electric forward / backward adjustment

• Electric seat height adjustment

• Electric seat base inclination

• Electric backrest/recline adjustment

• Electric headrest adjustment

• Lumbar support

• Driver/passenger memory functions

• Heated seats

• Ventilated seats where equipped

• Multicontour functions where equipped

Each seat can therefore contain multiple motors and actuators with different part numbers.

COMMON SYMPTOMS / REASONS FOR REPLACEMENT

• Seat no longer adjusts in one direction

• Seat stuck in one position

• Electric adjustment completely inoperative

• Intermittent seat movement

• Slow or weak seat movement

• Motor making abnormal noise

• Motor seized

• Motor operates but seat does not move

• Internal motor/gear wear

• Damaged electrical connector

• Damaged drive mechanism

• Motor damaged during seat removal or repair

• Replacement required during seat-frame overhaul

IMPORTANT DIAGNOSTIC INFORMATION

A seat that does not move does not automatically indicate a failed motor.

Before replacement, check:

• Seat adjustment switches

• Seat fuses

• Seat power supply

• Ground connection

• Seat control module

• Seat wiring harness

• Motor electrical connector

• Wiring continuity

• Drive cables

• Seat adjustment spindle

• Seat rails

• Mechanical gearbox

• Obstructions within the seat mechanism

If the motor can be heard running but the seat does not move, inspect the drive cable, gearing and mechanical adjustment mechanism before replacing the motor.

VEHICLE NETWORK / DIAGNOSTICS

Vehicles equipped with electronically controlled/memory seats can be diagnosed using Mercedes STAR/Xentry or suitable diagnostic equipment.

Depending on vehicle specification, diagnostics can assist with:

• Reading seat-related fault codes

• Checking seat control-module communication

• Checking adjustment commands

• Testing individual seat functions

• Identifying electrical supply problems

• Diagnosing memory-seat faults

INSTALLATION

Install the replacement motor in the same position and orientation as the original.

Before installation compare:

• 0390203296 number

• Motor casing

• Electrical connector

• Connector pin configuration

• Drive output

• Shaft/cable connection

• Mounting points

• Mechanical orientation

After installation, operate the seat through the complete relevant adjustment range and ensure smooth movement without binding or abnormal noises.

PROGRAMMING / CODING

The 0390203296 electric motor itself does not normally require programming or coding.

It operates as an electromechanical actuator under the control of the existing seat electronics.

If a seat control module or other electronic component is replaced simultaneously, additional diagnostic configuration or initialisation may be required.

IMPORTANT COMPATIBILITY NOTE

Mercedes used multiple different motors within the same electrically adjustable seat.

Therefore, do not order solely because the vehicle is a CLS C218/W218, E-Class W212/S212 or S-Class W221.

Please match:

0390203296

0 390 203 296

Where present, also compare:

KEIPER 82584372-4

825843724

Additionally check:

• Motor appearance

• Electrical connector

• Connector pin arrangement

• Drive shaft/cable connection

• Mounting points

• Position within the seat

• Seat adjustment function

Matching 0390203296 / 0 390 203 296 and the physical configuration to the original motor is the safest compatibility check.

CONDITION

Genuine used Mercedes-Benz / Bosch OEM seat adjustment motor.

Removed from a 2014 Mercedes-Benz CLS C218/W218 – Front Right O/S Driver Seat (UK RHD).

The item may show normal signs of previous installation, use, storage and removal.

Please inspect all listing photographs carefully and compare the part number, connector, drive connection and mounting arrangement with your original component.

Ideal genuine replacement for a faulty, seized or damaged front electric seat adjustment motor on compatible Mercedes CLS C218/X218, E-Class W212/S212 and selected S-Class W221 applications where 0390203296 / 0 390 203 296 and the physical seat mechanism match the original part.