Mercedes Cls Seat Adjustment Motor Front Right O/S Height Regulator 0390203325

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Genuine Mercedes-Benz CLS C218 W218 Front Right O/S Driver Seat Height Adjustment Motor 0390203325

Genuine used Mercedes-Benz / Bosch electric front seat height adjustment motor / actuator, suitable for selected Mercedes electrically adjustable front seats.

This motor was fitted to the front right seat and operates as part of the powered seat adjustment mechanism. On a UK right-hand-drive Mercedes CLS, the front right seat is the Driver / O/S side.

Part Number: 0390203325

Bosch Number: 0 390 203 325

Alternative Format: 0-390-203-325

Part Type: Electric Seat Adjustment Motor / Actuator

Function: Seat Height Adjustment / Height Regulator

System: Electric Front Seat Adjustment

Position: Front Right Seat

UK RHD Position: Driver / O/S

Vehicle Platform: C218 / X218

Donor Vehicle: Mercedes-Benz CLS

Donor Year: 2014

Manufacturer: Bosch / Mercedes-Benz Application

Condition: Genuine Used OEM Part

COMPATIBILITY

The 0390203325 / 0 390 203 325 motor is directly documented as a right-hand seat adjustment actuator on Mercedes CLS W218/C218 and as a front-right seat height regulator on Mercedes W212. (EccoParts sp. z o.o.)

MERCEDES-BENZ CLS C218 / W218 – 2011–2018

Potential applications with the corresponding electrically adjustable front 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 CDI / d 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 exact 0390203325 motor is documented on the CLS C218/X218 front-right seat, and separate fitment evidence shows it on 2012–2018 CLS550 W218 applications. (eBay)

MERCEDES-BENZ CLS SHOOTING BRAKE X218 – 2012–2018

Potential applications where the corresponding electric seat frame and adjustment system are 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 COMPATIBILITY

The exact 0390203325 / 0 390 203 325 motor is also documented on Mercedes-Benz E-Class W212 electric front seats. One compatibility catalogue lists the part against 231 W212 vehicle combinations, covering multiple petrol, diesel, hybrid and AMG derivatives. (eBay)

MERCEDES-BENZ E-CLASS W212 – SELECTED 2009–2016 APPLICATIONS

Potential applications include:

• E200 / E200 CDI

• E220 CDI / BlueTEC

• E250 CDI / BlueTEC

• E300

• E300 CDI / BlueTEC

• E300 Hybrid / BlueTEC Hybrid

• E350

• E350 CDI / BlueTEC

• E400

• E500 / E550

• E63 AMG

• E63 AMG 4MATIC

The same part is specifically catalogued as a W212 Front Right O/S Height Regulator Motor. (GlobalParts)

MERCEDES-BENZ E-CLASS S212 ESTATE

Selected S212 Estate models using the corresponding electric seat mechanism may also use this motor.

IMPORTANT: Engine size is not the primary compatibility factor for a seat motor. Compatibility depends mainly on the seat frame, adjustment mechanism, electrical connector and motor number.

FRONT RIGHT / DRIVER / PASSENGER INFORMATION

This part should primarily be identified as:

FRONT RIGHT SEAT

For a UK RHD vehicle:

Front Right = Driver / O/S

For a European / US LHD vehicle:

Front Right = Passenger Side

This is important for international listings because the same right-hand motor can be described as either a driver or passenger seat motor depending on the vehicle’s steering configuration.

SEAT HEIGHT ADJUSTMENT FUNCTION

The 0390203325 motor is specifically catalogued as a seat height regulator / height adjustment motor on W212 applications. (GlobalParts)

The motor converts electrical power into rotational movement, which is transferred through the seat’s mechanical adjustment system.

This allows the appropriate section of the seat frame to move vertically when the occupant operates the electric seat adjustment switch.

The system can include:

• Electric adjustment motor

• Reduction gearing

• Flexible drive shaft/cable

• Adjustment spindle

• Seat frame linkage

• Seat rails

• Seat adjustment switch

• Seat control electronics

ELECTRIC SEAT SYSTEM INFORMATION

Mercedes CLS C218/X218 electrically adjustable front seats can contain several separate motors.

Depending on seat specification, these can operate:

• Seat height adjustment

• Forward / backward adjustment

• Seat base inclination

• Backrest recline adjustment

• Headrest adjustment

• Additional comfort functions

Therefore, it is important to distinguish 0390203325 from the other motors installed within the same seat.

COMMON SYMPTOMS / REASONS FOR REPLACEMENT

• Seat height adjustment not working

• Seat stuck too high or too low

• One side of seat does not lift correctly

• Height adjustment works intermittently

• Seat moves slowly

• Motor seized

• Motor making clicking/grinding noises

• Motor operates but seat does not move

• Internal motor failure

• Damaged electrical connector

• Damaged drive mechanism

• Seat frame repaired but original motor damaged

• Replacement during electric seat refurbishment

IMPORTANT DIAGNOSTIC INFORMATION

A failed seat height adjustment function does not automatically mean the electric motor has failed.

Before replacing the motor, check:

• Seat adjustment switch

• Seat control module

• Seat fuse/power supply

• Ground connections

• Seat wiring harness

• Motor electrical connector

• Drive cable/shaft

• Adjustment spindle

• Reduction gearing

• Seat frame mechanism

• Seat rails

• Mechanical obstructions

If the motor can be heard running but the seat does not change height, inspect the mechanical drive, cable, gearing and seat-frame linkage before replacing the motor.

VEHICLE NETWORK / DIAGNOSTICS

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

Diagnostics can help check:

• Seat control-module communication

• Stored seat-related fault codes

• Adjustment commands

• Electrical supply

• Motor activation

• Memory-seat functions

• Wiring faults

INSTALLATION

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

Before fitting, compare:

• Motor number

• Electrical connector

• Connector pin arrangement

• Motor casing

• Drive shaft/cable connection

• Gear/drive output

• Mounting points

• Installation orientation

After installation, operate the seat through the complete height-adjustment range and check for smooth movement.

PROGRAMMING / CODING

No programming or coding is normally required for the 0390203325 motor itself.

It is an electromechanical actuator controlled by the vehicle’s existing seat electronics.

If the seat control module or other electronic components are replaced at the same time, additional diagnostic procedures may be required.

IMPORTANT COMPATIBILITY NOTE

Mercedes front seats contain multiple adjustment motors which can look very similar.

Do not order solely because your vehicle is a CLS C218/W218 or E-Class W212.

Please match the original motor number:

0390203325

0 390 203 325

0-390-203-325

Also compare:

• Motor shape

• Electrical connector

• Connector pins

• Drive output

• Shaft/cable connection

• Mounting points

• Motor position

• Seat adjustment function

Matching 0390203325 / 0 390 203 325 and the physical configuration to the original motor is the safest method of confirming compatibility.

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 the listing photographs carefully and compare the part number, connector, mounting points and drive connection with your original motor.

Ideal genuine replacement for a faulty, seized or damaged electric front-seat height adjustment motor on compatible Mercedes CLS C218/X218 and E-Class W212/S212 applications where Bosch number 0390203325 / 0 390 203 325 and the seat mechanism match the original component.