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W204 Anti-Theft Code

Remove the "Anti-Theft Protection Active" message from your W204 C-Class (2007-2014) COMAND head unit. Works with NTG4, NTG4.5 systems.

NTG4NTG4.5

W204 Command Code

Unlock your W204 COMAND system after battery replacement or head unit swap. Our command code restores full functionality to your C-Class infotainment system.

W204 HU PIN Code

Pair a replacement head unit to your W204. Our HU PIN code service activates and registers any COMAND or Audio unit to your vehicle's VIN number.

W204 MAP PIN Code

Activate navigation maps on your W204 C-Class COMAND system. We support Europe, North America, Middle East, Asia, and all other map regions.

Fast Email Delivery

Your W204 code is delivered to your email within 15-30 minutes. No waiting, no dealer appointments needed. Available 24/7, worldwide service.

100% Satisfaction Guarantee

Over 1,250+ satisfied C-Class owners trust our service. If your code doesn't work, we provide a full refund. Professional support available in 6 languages.

Get Your Mercedes Benz Service

Your serial number and emailPreviewPayment
Enter the serial number found on your head unit

Click or drag a file to this area to upload.

Uploading an image of your head unit increases the success rate
Your anti-theft code will be sent to this email address

The Mercedes-Benz W204 C-Class (2007–2014) is one of the most requested chassis for anti-theft unlock codes. Pre-facelift cars typically run COMAND NTG4; many facelift (2011+) cars use NTG4.5. After a battery disconnect, STAR diagnosis, or head-unit swap, the screen may show “CODE”, “WAIT”, or “Protection Active” and block radio/nav until the correct PIN is entered. We retrieve your W204 code from the official Mercedes database using the COMAND serial number and email it in 15–30 minutes. Coverage includes C180–C350, diesels, and C63 AMG in sedan (W204) and estate (S204), plus Coupe/Convertible derivatives that share the same NTG4 family.

Compatible Systems

COMAND NTG4 (2008-2012)COMAND NTG4.5 (2011-2015)PIN Code

Common Issues

COMAND shows CODE / WAIT after battery replacement
NTG4 or NTG4.5 locked after workshop electrical work
Protection Active on every ignition cycle
Head unit replaced and not paired to the car
Serial number hard to find without removing the unit
Estate (S204) or AMG needs the same PIN flow as sedan

About W204 C-Class Anti-Theft System

The Mercedes-Benz W204 C-Class (2007-2014) is equipped with an advanced anti-theft protection system integrated into the COMAND head unit. When the battery is disconnected, the head unit is replaced, or the vehicle undergoes certain electrical work, this security feature activates and displays the message "Anti-Theft Protection Active." This is a factory-designed security measure that prevents unauthorized use of the head unit — however, it can be frustrating for legitimate owners who simply need to restore their system after routine maintenance.

Our service provides the exact anti-theft PIN code, command code, HU PIN code, or MAP activation code that your W204 C-Class requires. We use the official Mercedes-Benz database to calculate your unique code based on your serial number or VIN. The process is completely safe, dealer-approved, and does not void your warranty. With support for NTG4, NTG4.5 systems and all C-Class variants produced between 2007-2014, we guarantee compatibility with your specific vehicle configuration.

How It Works

1

Find the COMAND serial on the unit label or engineering/menu info screen

2

Order on AntiTheftCode.com with the exact serial (photo of the sticker helps)

3

Receive your W204 PIN by email in 15–30 minutes

4

Enter the code with preset/number buttons on COMAND

5

Save the email — the PIN stays valid for the same head unit

Reviews

Tommy Haffman Mercedes COMAND

Tommy Haffman

Great & fast service. Got my Mercedes W212 anti-theft code quickly after battery replacement, and it worked perfectly! COMAND system is back to normal. Highly recommended.

Carla Megan Mercedes COMAND

Carla Megan

My Mercedes C-Class showed Anti-Theft Protection Active for 2 months after head unit swap. Got the code super fast from AntiTheftCode — wish I knew about them earlier! Saved me a trip to the dealer.

Marc Antoine Mercedes COMAND

Marc Antoine

Excellent anti-theft code service! My Mercedes E-Class COMAND was locked after disconnecting the battery. Received my code in 10 minutes and system is back up and running. 5-star experience!

Sara Smith Mercedes COMAND

Sara Smith

Fully recommended 5/5. Very nice support team, they helped me get the anti-theft code for my Mercedes GLC in less than half an hour. Much cheaper than the dealer wanted (€120!).

James Wilson Mercedes COMAND

James Wilson

Very impressed! After struggling with my Mercedes S-Class anti-theft protection for weeks, got the code in less than an hour. Professional service and only €25 — dealer quoted me €150!

Sophie Klein Mercedes COMAND

Sophie Klein

Brilliant! My Mercedes W204 COMAND was locked after a battery change. They sent me the anti-theft code almost immediately. €25 instead of €100+ elsewhere. Will recommend to everyone!

Frequently Asked Questions

Which W204 variants are supported?
All common W204/S204 models: C180, C200, C220 CDI, C250, C300, C350, and C63 AMG. Sedan and Estate are covered when the head unit is NTG4 or NTG4.5.
NTG4 vs NTG4.5 — do I need a different service?
No. Order the W204 anti-theft PIN; we calculate for the serial you provide whether the unit is NTG4 or NTG4.5.
Where is the serial number on W204?
Usually on a sticker on top/side of the head unit (may need partial removal) or via engineering/diagnosis menus. A clear photo of the label is enough for the order.
Is the code reusable after another battery change?
Yes. The PIN is tied to the head unit. Keep the email so you do not need to reorder after routine electrical work.
Do you also sell MAP codes for W204?
W204 mainly needs the anti-theft PIN. If your unit also asks for a map/region activation, mention it in the order notes and we will guide the correct service.

Ready to unlock your W204?

Get your W204 C-Class anti-theft code in 15-30 minutes

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