Resler Module Configurator

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With the Resler Module Configurator (current version: 0.9.29) you may comfortably configure all functions of the Resler Module on your desk at the computer prior to installing the module into the car.
The configurator is particularly convenient to use thanks to its appealing user interface. It is primarily used for settings when the Resler Module is to be used standalone (i.e. without the Android radio/I-BUS app).

  • Read / write Resler Module
  • Flash Resler Module firmware from a file (available updates are recognised and automatically downloaded from the Internet).
  • load and save Resler Module configuration (from/to file)
  • Load and save CHLH light sequences from file (also in I-BUS App format to transfer them to the module with the I-BUS App in the car).
  • Set vehicle configuration
  • Configure CHLH Start and Stop
  • Configure auxiliary heating / auxiliary ventilation
  • Configure folding/unfolding mirrors
  • Configure timer for auxiliary heating / auxiliary ventilation / relay output
  • configure comfort blinking / cornering light / daytime running light / highway light
  • Conveniently create / edit light sequences

Especially the editing of CHLH light sequences is much more easy with the configurator on the PC than in the car.

The following settings are available in the Resler Module Configurator:



With "Read module", the configuration on the module is read out and displayed in the Resler module configurator. It can then be edited.
With "Write module" the configuration set in the Resler Module configurator is written to the Resler Module.


With "Flash Firmware File" you can flash a previously downloaded firmware onto the Resler Module.
If the firmware on the module is not up to date an info appears and the button "Flash firmware update" is displayed and can be confirmed.
The progress of the flash process is shown in the bar next to it.
If a module is connected the firmware version of the module will be displayed at the bottom of the field.

Module Configurator

Here you can save the created configuration on the computer or load a configuration saved on the computer to display it in the Resler Module configurator, edit it or write it to the module.
Configurations have the file format *.rmc


Light sequences can be loaded into the file format of the I-BUS App (*.xml) to be shown or edited under "Light sequences". For this purpose light sequences can be saved again in the file format for the I-BUS App. These can then be transferred to the Android device with a data carrier (USB stick or SD card) and imported in the app in the lighting control under "Load".


Currently the Resler Module Configurator is available in German and English.
Other languages are in the process of being added.
If you are fluent in a language other than German or English - and know all the technical terms used in the app - and want to help Rolf translate the app: [get in touch with Rolf]!

Module Mode

You have to specify whether the module is to be

  • in operation with or without I-BUS app
  • "Module active" (all functions active)
  • "Module only active with ignition off" (only CHLH, mirror flaps and aux heater control works).
  • "Module completely inactive"

In particular BMW E46/E83/E85 (i.e. with LSZ) have to REMOVE the hook at "Operation with I-BUS App" in the mode if the module is to be used without I-BUS App. Otherwise, the speedometer will dim when flashing.

Car configuration

Car series

Select the series of the vehicle in which the Resler module is to be used.
If this is not done malfunctions (such as different active lights) may occur.

On-board computer

Here you have to set whether you have installed the speedometer without on-board computer, with the small display or the large display. This applies to BMW E38/E39/E53. BMW E46 and E83 always have the "High BC".
Habe ich High oder Low BC?


NOTE: If the function is set to auxiliary heating on vehicles WITHOUT auxiliary heating and this is started a malfunctions will occur. Often the fan is started and can only be stopped by disconnecting the vehicle battery. Therefore make sure that a parking heater is installed.
An indication of an installed auxiliary heater may(!) be a sticker of the company "Webasto" in the engine compartment on the left dome. However this is also present if only an additional heater is coded in the case of diesel vehicles.
Initially the type must be defined for this (especially for control via remote control).

OFF There is NO control of the parking heater/parking heater ventilation
Type 1 Only for E38/E39/E53 with High BC speedometer
Type 2 E38/E39/E53 with Low BC speedometer
Relay In the E46/E83/E85 the control is done via +12V switching signal instead of via the BUS system. By retrofitting a relay (not included) this can be switched via the ground signal on the green wire of the Resler module.


  • Fold/Unfold Mirrors: Sets the start conditions for the folding/unfolding of the mirrors. The following options are available:
    • OFF
    • Double-tapping the remote control
    • Always active
  • Invert mirror unfolding: If the mirrors fold in when unlocking, the function can be reversed here
  • Unfolding the mirrors when the ignition is switched on: Unfolding of the (folded) mirrors only happens when ignition level 2 is switched on.

Coming/Leaving Home

Here you find the following functions:

Coming Home [CH] ("Home lights" - Lights up e.g. when locking the car)
Leaving Home [LH] ("Welcome lights" - Lights up e.g. when unlocking the car)

We shorten both functions with "CHLH".

Starting time for CHLH

CHLH may be always on oder always off .
set start and end manually. Only if so underneath following items are shown:

Coming Home end time Time of day until CHLH is active1
Coming Home start time Time of day from which on CHLH is active1

Automatically calculate the start/end time based on location, date and twilight type:

Daytime calculation mode2 Sets the start/end time depending on the GPS position, date and twilight process (sunrise/sunset) when turn ignition off
CHLH start time delay Sets time difference "xx" before sunset/time of day calculation when CHLH should start
(Window: -120 ... +120 minutes, negative time moves the time forward, positive moves it backwards).
CHLH end time delay Sets time difference "yy" after sunset/time of day calculation when CHLH should end
(Window: -120 ... +120 minutes, negative time moves the time forward, positive moves it backwards).

1unless "always active" or a "time of day calculation mode" is set
2 Calculation options see table, calculated time incl. displacement is displayed in the status

Computation model Explanation
No calculation of the day times Use of fixed times, always active or always off
Sunrise/sunset Calculated sunrise and sunset
Civil twilight Darkness beyond which it is no longer possible to work or read outside without artificial light.
Nautical twilight Follow the civil twilight to the darkness beyond which you cannot yet see the stars.
Astronomical twilight From this level of darkness, stars are visible in the sky

Additional start/stop signals for CHLH

In addition the following start/stop signals for CHLH can be defined:

CHLH Start/stop by ignition Coming Home sequence begins with ignition off. Leaving Home sequence ends with ignition on (if it is still running).
Coming Home start when opening a door Coming Home sequence already starts with opening a door after switching off the ignition
Leaving Home stop when opening a door Stop the Leaving Home sequence with opening a door, if it is still running.
Activate CHLH in underground car park If this option is activated, CHLH is activated if the GPS signal is lost (takes about 60 seconds), e.g. in an underground car park. This means that the lights also start outside the set time if the GPS signal is missing.

These functions are partly locked against each other so that they are mutually exclusive.

Light sequences for Coming Home/Leaving Home

The Resler Module has a microcontroller and a clock module so that it is possible to create light sequences for CHLH as desired.
A total of up to 100 sequences are possible, which can be divided between CH and LH as desired. Setting the light sequence is done as already known via the menu light control

Quick guide:
After creating/loading/importing the light sequence:

  1. Tap on „Save“
  2. e.g. select memory slot 2 - 6 (memory slot 1 is intended in the app for "2x headlight flasher, not for CHLH).
  3. Confirm question for use as Coming/Leaving Home
  4. Select use for Coming OR Leaving Home
  5. Confirm "Send to Resler Module"
  6. Wait for successful writing to the Resler module, if an error occurs, restart at 1).

Download and insert sample light sequences for Coming Home/Leaving Home

In Load', there is now also the Import from the Resler module or from the memory of the radio (e.g. with sequences created on the PC or example sequences).


The Resler Module allows pre-programming of up to 8 timers with a lead time of up to one week and weekly repetition beyond that.

Example Example
activate/ deactivate timer Set the slider accordingly. After the timer has run, it is deactivated.
Start time Set the start time for the timer
Duration Setting the duration of the timer (1-30 minutes)
Days Set the days on which the timer should be active
Weekly repetition The complete timer is repeated continuously every week as it is set.

The option also has to be set if the timer shall run on more than one day. Otherwise the timer will be deactivated after the first run.

Functional type The type can be set to auxiliary heating/ventilation or relay.

The air-conditioning control unit decides whether ventilation or heating is required based on the outside temperature (16°C is the switchover point).

NOTE: Since the air conditioning control unit decides which function is to be implemented the timer can usually always be used for the auxiliary ventilation function (except E46/E83/E85) even if no auxiliary heating is installed.

Light functions

If the module is used WITHOUT Android radio and I-BUS app the settings that are set here are active in any case.
If the Resler module is used with the I-BUS app it is possible to switch in I-BUS app whether the light functions are to be performed by the Resler Module or I-BUS app.
The benefit of control via the Resler Module is that it is independent of the I-BUS App and the radio. This means that the functions are available even when the radio is switched off or the I-BUS app is closed.
To "switch off" the daytime running lights just deselect all lights.

Light sequences

Light sequences can be created and edited here.
It is important to specify whether the sequence is to be used for Coming Home or Leaving Home. To switch tap the respective radio button.
Lights can be selected or deselected by clicking on the respective light on the vehicle. Optionally the checkboxes can be set at the top of the text.
With the "plus" with arrow left or right a new sequence can be inserted before or after the selected sequence. The "x" deletes the selected sequence.
The duration of the individual sequences can be defined for each selected sequence via the slider or the input field.
In addition the familiar key combinations "CTRL+C", "CTRL+X" and "CTRL+V" work.

When the light sequences are ready they can be written to the module in the "Load/Save" tab via "Write module"..


Download Resler Module Configurator


Windows driver for the Resler Module

Download driver (zip)

Download driver setup

Example light sequences for download

Download sample light sequences (incl. example videos)