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Home >> Mercedes Benz >> 2021 >> C63 AMG 2D Convertible >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Electrical System, Equipment & Instruments -- 205 Chassis (2 Of 7) >> Basic Knowledge >> DC/AC Converter Control Unit, Component Description - GF54.21-P-4127RF

DC/AC Converter Control Unit, Component Description - GF54.21-P-4127RF

Model 205, 253 

with code U67 (230 V socket in interior compartment) 

Model 205, 253 

with code U80 (115 V socket) 

Shown on model 205.0 

G15022034Courtesy of MERCEDES-BENZ USA

Location 

The DC/AC converter control unit is located in the luggage compartment at the right, on a bracket behind the cover.

Task 

The 115 V power socket (X58/34) (with code U80 (115V socket)) provides a 115 V AC voltage.

The 230V socket (X58/44) (with code U67 (230 volt socket in interior)) provides a 230 V AC voltage.

The DC/AC converter control unit converts the DC voltage of the on-board electrical system into AC voltage. Small electrical devices that require an alternating voltage (e.g. video game consoles, mobile phone chargers) can be connected to the socket supplied in this manner. The maximum allowable electrical continuous load is P = 150 W; short-term, for t = 2 s, up to P = 300 W is permissible.

The DC/AC converter control unit supplies the microswitch in the socket with voltage. If a consumer is connected to the socket, voltage is switched through to the control input of the DC/AC converter control unit. The DC/AC converter control unit then converts the DC voltage of the on-board electrical system into AC voltage.

  Wiring diagram for control unit DC/AC converter Model 205 as of model year 2019 with code U67 (230 V socket in interior compartment) PE54.10-P-2103-97FBC
    Model 253 (except 253.99) as of model year 2020 with code U67 (230 V socket in interior compartment) Model 253 (except 253.99) as of model year 2020 with code U80 (115 V socket) Model 253.99 with code U67 (230 V socket in interior compartment) PE54.10-P-2103-97FCA
    Model 205 up to model year 2019 with code U67 (230 V socket in interior compartment) Model 253 (except 253.99) up to model year 2020 with code U67 (230 V socket in interior compartment) PE54.10-P-2103-97FBA
    Model 253 up to model year 2020 with code U80 (115 V socket) PE54.10-P-2103-97FBB