BSI BCM body control module 1349986080 503440020205 NBC250A.00
This Magneti Marelli module controls the vehicle’s central body electronics and communication between selected systems. It is intended for selected commercial vehicles built on the type 250 platform and must be properly prepared for the specific vehicle before installation.
Applications of the 1349986080 body computer module
- Fiat Ducato III, type 250 – selected versions produced approximately between 2006 and 2011,
- Peugeot Boxer II, type 250 – selected versions produced approximately between 2006 and 2011,
- Citroën Jumper II, type 250 – selected versions produced approximately between 2006 and 2011,
- various engine versions and body configurations – exact compatibility depends on the vehicle’s equipment.
Before purchasing, compare part numbers 1349986080 and 503440020205, as well as the designation NBC250A.00, with the original module. Matching the vehicle model, year or engine capacity alone does not confirm correct compatibility.
Common symptoms of a faulty 503440020205 BSI or BCM module
- no diagnostic communication with the body control module,
- problems starting the vehicle or an active immobiliser,
- incorrect operation of the central locking system or remote control,
- lights, indicators or windscreen wipers switching on by themselves or failing to operate,
- random warning messages and warning lights on the instrument cluster,
- intermittent loss of power to interior equipment,
- battery drain caused by the module failing to enter sleep mode correctly.
Similar symptoms may also be caused by damaged wiring, connectors, fuses, poor ground connections or other modules connected to the CAN network. A complete diagnosis of the vehicle’s electrical system is recommended before replacing the module.
Programming, coding and cloning of the 1349986080 / 503440020205 module
A used 503440020205 module is not normally a Plug & Play component. Before it can operate in another vehicle, the original data must be cloned or the replacement module must be individually programmed and configured.
- cloning involves reading the data from the original module and transferring it to the replacement unit,
- depending on the condition of the module, the transferred information may include identification data, equipment configuration and immobiliser data,
- specialist bench tools supporting the NBC250A.00 module may be used, including iFlash BCM Tool or METSIM PRO,
- in the Fiat Ducato type 250, Body Computer diagnostics and the PROXI Alignment procedure can be performed using MultiECUScan and a suitable ELM interface,
- in the Peugeot Boxer and Citroën Jumper, configuration is performed using PSA-compatible diagnostic software such as DiagBox or Lexia.
The safest solution is to carry out a complete clone using a valid read from the original BSI or BCM. If the original module cannot be read, the required programming must be determined individually according to the VIN, vehicle equipment and condition of the immobiliser system.
Frequently asked questions
Does the 1349986080 module fit every Fiat Ducato III?
No. This part number was used only in selected configurations of the type 250 Ducato. Before purchasing, compare the complete set of references and check the vehicle’s equipment specification.
Is the 503440020205 BSI for the Peugeot Boxer ready for installation?
No. It is not a standard Plug & Play component. The module must be cloned from the original unit or programmed to the vehicle and correctly configured using diagnostic equipment.
Which tools can be used to clone the Magneti Marelli NBC250A.00 module?
The module can be serviced using specialist BCM programming tools, including iFlash BCM Tool or METSIM PRO. The work should be carried out by an automotive electronics specialist experienced with body control modules.
Is MultiECUScan sufficient to program the 503440020205 BCM in a Ducato?
The software supports Marelli Body Computer diagnostics and the PROXI Alignment procedure. However, it does not replace memory cloning if the used module still contains data from the previous vehicle.
What should be done if the original 1349986080 module is completely damaged?
The first step is to check whether the data can still be read on the bench. If no valid read is possible, programming based on the VIN, equipment configuration, immobiliser synchronisation and key registration may be required.
