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Mercedes W205 Head Unit Repair – Audio 20 / COMAND (NTG5 Entry) System
Are you experiencing issues with your Mercedes-Benz W205 head unit? Common faults include:
- Constant reboot/restart loop
- Vertical or horizontal white lines on the screen
- Fading, glitching, or distorted display
- Freezing or unresponsive controls
- No audio output
These symptoms are typically caused by a known manufacturing fault in the NTG5 Entry head units, affecting vehicles produced between 2014 and 2017. The issue lies in the software, which can corrupt itself over time — even though it may appear to be a screen fault, the problem is actually with the head unit itself.
✅ The Fix: Software Update
This issue is fully repairable with a genuine Mercedes-Benz software update — but it requires specialist equipment, usually only available at main dealerships.
That’s where we come in.
💡 Why Choose MBCoders?
- ✅ Registered independent specialist with access to the official Mercedes dealership system
- ✅ Use of authentic dealership-grade tools and software
- ✅ Same solution as the dealer — without the dealer prices
- ✅ No fix, no fee — you only pay if we can successfully apply the update
💷 Pricing Comparison:
| Service | Dealership | MBCoders |
|---|---|---|
| Diagnostic Fee | £186.00 | £0.00 |
| Labour (1 hour) | £158.00 | £149.99 (All-In) |
| Total | £344.00 | £149.99 |
📍 Location: Bedford
Repairs are carried out on-site — your vehicle must be brought to us. If you're located further away and confident working with vehicle electronics, check out our postal repair service, available on our other listings.
🔄 Backup Option:
In the rare case (less than 0.3%) that the update fails, we offer replacement head units, fully fitted and coded for £279.99.
🛠️ Success Rate
Over 99.7% success rate. Fast, professional, and cost-effective.
📞 Contact us today or message us for availability and booking.
🔧 Known Part Numbers:
- A2059008917
- A2059009814
- A2059006222
- A2059013300
- A2059011912
- A2059003729
- A2059007815