Product Description

Replace your faulty or immobilized engine electronics with this OEM BMW ECU Control Unit Kit, part number 7549700, designed for the BMW E65 740i with N62N 4.0L V8 (306HP) automatic transmission.

This is a matched ECU + CAS kit, providing a complete solution for engine start issues, ECU failure, or immobilizer problems. When installed as a full set, it ensures proper synchronization between the engine control unit and vehicle security system.

What’s Included

• DME ECU (Engine Control Unit)
• CAS Module (Car Access System / Immobilizer)
• Matching key / key data (if included with donor set)

👉 All components are paired and matched from the same vehicle

Features

• OEM BMW ECU + CAS Kit
• Part Number: 7549700
• N62N 4.0L V8 – 306HP
• Fits BMW E65 740i Automatic
• Plug-and-play when installed as a complete matched set
• Eliminates ECU/CAS synchronization issues
• Direct OEM replacement solution

Condition

Used / OEM (tested working unless otherwise stated)

Important Notes

• Must be installed as a complete matched kit
• May still require minor coding depending on vehicle configuration
• Professional installation strongly recommended
• Verify compatibility before purchase

Common Symptoms Fixed

• Engine will not start
• Immobilizer / CAS mismatch
• ECU failure or communication errors
• Key not recognized
• Fault codes related to DME or CAS system

Fitment

BMW 7 Series:

• E65 740i
• N62N 4.0L V8 (306HP)
• Automatic transmission

Tags 

BMW ECU CAS kit 7549700, E65 740i ECU set, BMW N62N engine control unit, BMW immobilizer CAS module, BMW DME ECU kit 740i, BMW plug and play ECU set

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.