BMW ECU Unlock Service (2018 – June 2020 Production)

Unlock the full tuning potential of your 2018 – June 2020 BMW with our professional ECU (DME) Unlock Service.

BMW vehicles produced up to 06/2020 are equipped with locked DMEs that prevent OBD tuning from the factory. Our unlock service removes this restriction, giving you full OBD read & write access, allowing you to flash performance tunes directly through the OBD port.

Once unlocked, your ECU can be tuned and updated without repeated bench access.

What This Unlock Enables

• Full OBD writing capability
• Compatibility with BM3, MHD, and other major tuning platforms
• Stage 1, Stage 2, custom tuning, flex fuel, burble adjustments
• Quick tune revisions via OBD
• No need to remove ECU again after unlock

How It Works

Option 1 – Send-In ECU Service
Remove your ECU and ship it to Custom Tunez.
We professionally bench unlock the DME and ship it back, ready for OBD flashing.

Option 2 – Visit a Local Dealer
Visit one of our authorized dealers for in-person unlocking (location dependent).

Supported Engines (Up to 06/2020 Production)

• B48
• B58
• N55 (select models)
• S55
• S58 (early production)
• N63 / S63

If you’re unsure whether your BMW requires unlocking, send us your VIN and build date for verification.

Important Notes

• Applies to BMW vehicles produced up to June 2020
• ECU removal required for mail-in service
• Professional installation recommended
• Vehicle must be mechanically healthy before tuning

Unlock your BMW the right way and gain full OBD tuning access.