DQ400E

Temic DQ400E (DQ400) is a (wet) 6 speed dual-clutch Transmission Control Unit mounted in:

• Audi: A3, Q3
• Cupra: Formentor
• Volkswagen: Golf, Passat

Technical details

Available services

DQ400E IMMO-OFF

Disables the immobiliser in the TCU.

Order IMMO-OFF for DQ400E

DQ400E transfer

Allows complete transfer of IMMO data between different TCU families and TCU models. Commonly used during transmission conversions or swaps where the replacement TCU differs from the original unit.

DQ400E to TCU

Transfer from DQ400E to another TCU.

Order transfer to TCU

DQ400E synchronization

Synchronizes the TCU with the vehicle’s immo master module to restore proper immo operation. Required after TCU replacement, module mismatch or when restoring immo pairing.

DQ400E with MQB

Synchronizes DQ400E with the MQB cluster.

Order MQB synchronization

Part numbers

All DQ400E part numbers are supported for IMMO-OFF, transfer and synchronization services. The list below shows the most common variants:

Notes

• 🔧 Full bench/boot read is required.
• ⚠️ Virtual/partial reads are not supported.
• ✅ Full checksum correction is included.

Related ECUs

• DQ200G2
• DQ200MQB
• DQ250MQB
• DQ381
• DQ500MQB