Programming of controllers and coding of used controllers

What does BMW controller programming consist of?

Controllers in BMW cars perform various functions depending on the model and equipment of the vehicle. These include:

• control of engine operation and traction elements – ABS, DSC controllers,
• safety elements – Air Bag controllers,
• body equipment – body controllers, light controllers, air conditioning and heating controllers, CIC audio and navigation controllers.

BMW M5 E60

Each of the controllers works like a standalone computer, which is connected to the others by a transmission network. The software in the controller allows it to perform the assumed functions based on the information and data supplied to it from the rest of the vehicle:

• speed,
• load,
• acceleration/deceleration,
• temperature,
• pressure.

The software requires regular updates. Based on data sent from all over the world from ASO stations to BMW AG headquarters, analyses and improvements are made to the existing software. The need to update the software then arises. Technical capabilities allow the program to be updated in any controller. However, it is recommended to update the software in the entire vehicle – in all controllers at the same time.

Uploading of the new software is carried out using diagnostic equipment via the OBD socket (via CAN network) or via a fiber-optic network (much faster transmission speeds). The software is supplied directly from BMW AG and matched to a specific model – identification by vehicle VIN number.

OBD plug-in | By Florian Schäffer [CC BY-SA 3.0]

What is the coding of used controllers in BMW?

Sometimes, for economic reasons, customers have their controllers replaced with functional used ones – from another vehicle. If the controllers are well matched (based on the VIN number) such an operation is possible and allows a significant reduction in repair costs. In the case of replacing the driver with another efficient one, there is no need to program it, only coding remains, i.e. assigning to the new vehicle VIN number.

Example of VIN number in BMW

In what time will the drivers be programmed?

The time it takes to program the controller depends on its design and version, usually it is from a few to several minutes. If the entire vehicle needs to be programmed, this time can be several hours. The more additional equipment in the vehicle, the longer the programming time.

What elements make up the cost of programming controllers?

The cost of driver programming includes the cost of the program, its uploading and vehicle diagnostics. We always prepare a cost estimate and consult with the vehicle owner before starting the work.

FRM BMW controllers