Yes, on BMW vehicles, including the G31, the rear daytime running lights (DRL) can often be coded. However, the specific steps and their feasibility depend on various factors such as the year of your G31, the software version, and the hardware installed. Coding vehicle functions such as DRLs typically requires access to proprietary BMW software tools such as ISTA or E-Sys, as well as knowledge of the specific module and parameter settings to configure. In some cases, third-party software or third-party devices may also be used for coding.
To continue, you will typically need:
1. Acquire the necessary coding tools and software.
2. Connect to the vehicle's OBD port using the coding interface.
3. Identify the appropriate module or modules responsible for controlling the rear DRLs.
4. Change the relevant settings to enable the rear DRL function.
5. Test the changes and make sure they work as intended.