BMW DTC P1663 – EWS (Electronic Immobilizer) Rolling Code Faulty Storage in EEPROM
DTC P1663 meaning on BMW
DTC P1663 on a BMW refers to the Electronic Immobilizer Rolling Code Faulty Storage in EEPROM. This fault code indicates an issue with the electronic immobilizer system, specifically related to the rolling code stored in the EEPROM.
BMW DTC P1663 symptoms
Symptoms of DTC P1663 on a BMW may include difficulty starting the vehicle, the engine not turning over, or the immobilizer system preventing the engine from starting altogether. The vehicle may also exhibit intermittent starting issues or fail to start at all.
BMW DTC P1663 causes
The main cause of DTC P1663 on a BMW is a faulty storage of the rolling code in the EEPROM of the electronic immobilizer system. This can be due to a malfunction in the immobilizer module, a communication error, or a problem with the EEPROM itself.
BMW DTC P1663 seriousness
DTC P1663 is a serious fault code on a BMW as it can prevent the vehicle from starting, leading to inconvenience and potential safety issues. It is important to address this fault promptly to ensure the proper functioning of the immobilizer system.
How to diagnose DTC P1663 on BMW
To diagnose DTC P1663 on a BMW, a diagnostic scan tool capable of reading BMW-specific fault codes is required. The technician will need to retrieve the fault code and perform further testing to determine the exact cause of the issue. This may involve checking the immobilizer system components, wiring, and connections for any faults.
How to fix DTC P1663 on BMW
Fixing DTC P1663 on a BMW typically involves reprogramming or replacing the EEPROM in the electronic immobilizer system. This process may require specialized equipment and knowledge of BMW’s immobilizer system. It is recommended to consult a professional automotive technician or BMW dealership for proper diagnosis and repair.
How to erase DTC P1663 on BMW
To erase DTC P1663 on a BMW, the fault code must be cleared using a diagnostic scan tool. Once the underlying issue has been addressed and fixed, the technician can clear the fault code from the vehicle’s memory. This will reset the immobilizer system and allow for normal operation.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.