LokPilot V4.0 M4 MKL

This LokPilot decoder is a true quad protocol decoder and besides DCC with RailComPlus® it also supports Motorola®, Selectrix and M4. It will only be available with the 21-pole interface with 6 amplified function outputs and is specifically designed for recently introduced Märklin® locomotives. Thus this decoder is the first choice for all Märklin® friends, who do not want to forego the mfx® compatibility.

Operating modes

The LokPilot V4.0 M4 MKL supports DCC as well as Motorola®, Selectrix® and M4. In DCC mode it supports 14-128 speed steps as well as 2- and 4-digit addresses and up to 28 functions. Due to RailComPlus® the decoders register automatically at suitable command stations.

The LokPilot V4.0 M4 MKL supports all DCC programming modes and can be operated as well as programmed with suitable command stations: Thanks to RailComPlus® one can read out CV values on the main with matching command stations. There are utility registers for all command stations that can only program CVs  1-255.

Motorola® users profit from up to 28 speed steps for 255 addresses. Three additional Motorola® addresses facilitate the use of 16 functions. An integral programming mode also facilitates programming with the venerable Control Unit 6021.

The M4 protocol allows for automatic registration to mfx® compatible command stations (e.g. Mär¬klin® Central Station or Mobile Station). Programming with these command stations (central units) can be accomplished in the same manner as you know it from the original Märklin® decoders.

The LokPilot V4.0 M4 MKL decoder detects Märklin® braking sections just as well as ZIMO® HLU braking commands or the  Lenz® ABC system. Braking with DCC braking modules or with DC power is also possible. In addition, this decoder also responds to Selectrix® braking diodes.

The LokPilot V4.0 M4 MKL decoder may be used in analogue DC and AC powered layouts.

The decoder automatically switches “on-the-fly” between the different operating modes. In most cases one does not have to adjust anything.

Motor control

The LokPilot V4.0 M4 MKL is equipped with 5th generation load control. The performance may be adapted to different motor types by means of 6 parameters. Alternately the decoder sets its parameters to the optimum value once a test run in ”Auto tune” mode has been conducted. Adapting a decoder to the motor characteristics has never been easier. ESU decoders control all types of motors, no matter if its Märklin® motors, Fleischmann round motors, coreless motors (e.g. Faulhaber) or a centrally mounted motor with flywheel(s). With the aid of Dynamic Drive Control (DDC) you are able to limit the influence of load control, which allows you to control your locomotives with smooth speed settings in the yard area while the locomotive prototypically slows down going up the hill. SoftDrive® sine motors, such as in many Märklin® models, may also be controlled by the LokPilot V4.0 decoder. Thanks to SUSI this also works with Trix® locomotives.


The LokPilot V4.0 M4 MKL decoder has six amplified function outputs connected to the 21 pole interface. This decoder has been developed for more recent Märklin® locomotives, because they deviate from the NEM 660 respectively VHDM RCN-121 norm and have amplified outputs AUX3 and AUX4 (instead of the logic level outputs). All important lighting functions are available. The brightness of each output may be adjusted independently. The decoder supports the automatic push and pull movements in conjunction with digital couplers by ROCO®, Krois® and Märklin Telex®.

Operational reliability

If so desired, you may connect a PowerPack (ESU part No. 54671) to the LokPilot V4.0 M4 MKL in the same manner as with all other 4th generation ESU decoders.


Of course, all function outputs as well as the motor output are protected against overload.


Further information