DTC Description (Torque Converter Lock-Up Clutch)

WARNING: This page does not describe the selected car, but rather 16 other vehicles, including the 2002 Mercedes-Benz SL500, 2002 Mercedes-Benz S500, 2002 Mercedes-Benz S430, 2002 Mercedes-Benz E55, and 2002 Mercedes-Benz E430. However, it is still accessible from the selected car via links, so may be relevant.

Fault Memory & Actuation Of MIL - MIL is turned on after 2 consecutive driving cycles with fault.
Frequency Of Testing - Continuous.
Checked Signal Or Status - Coefficient of friction of converter lock-up clutch.
Test Conditions - When torque converter lockup clutch is engaged, the friction coefficient is calculated by rotational speed comparisons. If these comparisons are outside a tolerance a number of times, a fault is detected.

NOTE: Faults are recognized by the Electronic Transmission Control (ETC) module and sent to the ME-SFI control module via the Controller Area Network (CAN) data bus. The ME-SFI control module carries out fault memory and actuation of Malfunction Indicator Light (MIL). Also read out ETC fault memory, fault code 53.