Product Description

Replace your faulty or non-functioning engine electronics with this OEM BMW ECU Engine Control Module Set, part number 7523523, designed for the BMW 745i E65 (2002–2003).

This is a matched ECU set, providing a reliable solution for engine control failure, immobilizer issues, or no-start conditions. The DME (Digital Motor Electronics) is the main engine computer responsible for managing fuel injection, ignition timing, and overall engine performance.

What’s Included

• Engine Control Unit (DME ECU – 7523523)
• Matching immobilizer components (CAS/EWS depending on configuration)
• Key / transponder (if included in set)

👉 All components are matched from the same donor vehicle

Features

• OEM BMW ECU Control Module Set
• Part Number: 7523523
• Fits BMW E65 745i
• Model years: 2002–2003
• Complete engine management system
• Plug-and-play when installed as full matched set
• Eliminates ECU / immobilizer synchronization issues

Condition

Used / OEM (tested working unless otherwise stated)

Important Notes

• Must be installed as a complete matched set only
• May require minor coding depending on vehicle configuration
• Professional installation strongly recommended
• Please verify compatibility before purchase

Common Symptoms Fixed

• Engine will not start
• ECU failure or communication faults
• Immobilizer / CAS mismatch
• Misfires or poor engine performance
• Fault codes related to DME system

Fitment

BMW 7 Series:

• E65 745i
• Model years: 2002–2003

Tags 

BMW ECU 7523523, E65 745i engine control unit, BMW DME ECU set, BMW immobilizer kit 745i, BMW engine computer module, BMW ECU replacement E65

Return Policy

Returns are accepted within 14 days of delivery. Items must be returned in the same condition as received and in the original packaging.

The buyer is responsible for return shipping costs.

Any customs fees, taxes, or import duties are the responsibility of the buyer.

All parts are used OEM components. We are not responsible for installation issues, coding requirements, or labor costs. Please ensure compatibility with your vehicle before purchasing.