Simultaneous Application Of Brake And Accelerator Pedal (DTB 50/01; MB-NET 302)

Publication date: 2001-05-25
Reference number: DTB 50/01; MB-NET 302

SIMULTANEOUS APPLICATION OF BRAKE AND ACCELERATOR PEDAL

TECHNICAL SERVICE BULLETIN

Reference Number(s): DTB 50/01; MB-NET 302, Date of Issue: May 25, 2001

MERCEDES-BENZ:	C240/C320; CLK320/CLK430; E320/E430/E55; SLK230/SLK320; CL500/CL55/CL600; S430/S500/S55/S600
GROUP:	30 - Accelerator Control, Cruise Control (CC), Electronic Accelerator (EA)

NOTE: This bulletin replaces MB-NET No. 290 dated May 22, 2001.

SUBJECT

DEALER TECHNICAL BULLETIN 50/01

SERVICE INFORMATION

50/01-1 RECALLS AND SERVICE CAMPAIGNS: WHEN REPAIRING ANY VEHICLE, ALWAYS CHECK THE VEHICLE MASTER INQUIRY FOR OPEN CAMPAIGNS

50/01-2 GROUP 30 - SIMULTANEOUS APPLICATION OF BRAKE AND ACCELERATOR PEDAL:

MODEL ENGINE PRODUCTION

C-Class (C240/C320) M112 as of 01/01
CLK320 M112 as of 01/01
CLK430/CLK55 M113 as of 01/01
E-Class (E320) M112 as of 01/01
E-Class (E430/E55) M113 as of 01/01
SLK230 M111 as of Model Year 01
SLK320 M112 as of 01/01
CL500/CL55 M113 as of 01/01
S430/S500/S55 M113 as of 01/01
S600 M137 as of 08/00
CL600 M137 as of 08/00

Under certain circumstances, simultaneous application of the brake and accelerator pedal (e.g., two footed driving) will result in the engine ECU returning the actuator to the idle position.

Upon release of the brake pedal and/or application of the accelerator pedal, there is a 1-2 second delay until the actuator moves to the new accelerator pedal input position. This delay is integrated in the ECU as a safety feature to provide smoother acceleration during actuator transition from idle and to minimize any sudden surges that might result from the release of the brake after simultaneous brake and accelerator application that may startle a driver. It is not subject to modification in the field.

A driver that simultaneously applies the brake and accelerator pedals may experience this scenario, especially when driving in stop and go traffic. In case of customer complaints, explain that this is a design characteristic incorporated in the engine management system as a safety feature.