Mercedes W204 Radio Code - Complete Guide [2025]

The Mercedes-Benz W204 C-Class (2007-2014) features sophisticated radio and COMAND systems that require unlock codes when power is interrupted. This comprehensive guide covers everything W204 owners need to know about radio codes, from finding serial numbers to entering codes correctly.

🚗 What is Mercedes W204?

The Mercedes-Benz W204 is the internal designation for the third generation of the Mercedes-Benz C-Class, produced from 2007 to 2014. This popular model includes C180, C200, C220, C230 gasoline engines, C200 CDI, C220 CDI, C250 CDI diesel engines, and C300, C350, C63 AMG performance variants.

💡 W204 Radio Systems

Most W204 models came with these radio systems:

• Audio 20 - Standard radio/CD player
• Audio 50 APS - Navigation system
• COMAND APS - Premium multimedia system

🔒 Why Does W204 Radio Lock?

Your Mercedes W204 radio locks as an anti-theft security measure. This happens when:

• Battery Disconnection - Most common cause during battery replacement or repair work
• Power Loss - Electrical issues, fuse problems, or alternator failure
• Radio Removal - Taking radio out for repair or replacement
• Wrong Code Entry - Entering incorrect code 3 times locks the system

⚠️ W204 Radio Lock Symptoms

How to know if your W204 radio is locked:

• "CODE" Display - Screen shows "CODE" or "Enter Code"
• No Sound - Radio powers on but no audio output
• Dead Display - Screen is blank or shows error message
• Locked After Attempts - "WAIT 1 HOUR" or similar message

📝 How to Get W204 Radio Code

🏆 Best Method: Professional Online Service

Our service provides the fastest and most reliable solution:

• Price: Only €24.99 (vs €40-60 at dealerships)
• Speed: Code delivered within 2 minutes
• Convenience: Works from home, no dealer visit needed
• Support: 24/7 customer assistance

🎯 Step-by-Step: Get Code with AntiTheft Code

1. Find Your W204 Serial Number - Press and hold radio buttons 1+3 or check radio label
2. Visit Our Order Form - Go to antitheftcode.com/code-form
3. Enter Serial & Email - Fill in your W204 serial number and email address
4. Pay Securely - Safe payment with Stripe - only €24.99
5. Receive Your Code - Code delivered to your email within 2 minutes!

🔢 How to Enter Code in W204

Method 1: Using Radio Buttons (Audio 20)

1. Turn on your W204 radio
2. Display should show "CODE" or "Enter Code"
3. Use preset buttons 1-6 to enter each digit
4. Press button 1 = digit 1, button 2 = digit 2, etc.
5. After entering 4 digits, press and hold preset button 1+3
6. Radio should unlock and start working

Method 2: Using COMAND System

1. Navigate to "Audio" menu
2. Select "Enter Code" option
3. Use knob to select each digit
4. Confirm each digit with center button
5. After 4 digits, select "OK" or "Confirm"

⚠️ Important Warning

Only 3 attempts allowed! After 3 wrong codes, your W204 radio will lock for 1 hour. Make sure you have the correct code before entering.

🔧 W204 Code Troubleshooting

❌ Code Not Working

• Double-check serial number accuracy
• Ensure radio hasn't been replaced
• Try holding buttons longer when entering
• Contact our support for verification

⏰ "WAIT 1 HOUR" Message

• Wait exactly 1 hour with radio off
• Turn on radio - should show "CODE" again
• Enter correct code carefully
• If still locked, wait another hour

❓ W204 Radio Code FAQ

Q: How much does W204 radio code cost?

Our service costs only €24.99, while Mercedes dealerships charge €40-60.

Q: How fast can I get my W204 code?

Code is delivered to your email within 2 minutes of order completion.

Q: Will the code work for all W204 models?

Yes, our service works for all W204 C-Class models from 2007-2014.

Q: What if my W204 radio was replaced?

You'll need the serial number of the replacement radio. Check our serial number guide for help finding it.