What We Offer
We provide Mercedes AdBlue and SCR fault diagnostics and repair for selected vehicles with OM654 and OM656 engines, including supported Sprinter, Vito and V-Class models. Compatibility with MD1CP001, MRD1.41 and MRD1.42 ECUs is checked for each vehicle.
These ECUs use Secure Boot and TPROT protection, which can limit access by standard diagnostic tools. We assess the vehicle, the fault and the ECU before discussing the available repair options.
Our work with these ECU types uses specialist tools and knowledge of protected Mercedes systems, including advanced deactivation processes where relevant. We explain the proposed work before proceeding.
ECUs we assess include:
- MD1CP001
- MRD1.41
- MRD1.42
For a Sprinter, Vito, fleet or other supported Mercedes vehicle, contact us with the model, year, fault details and location so we can confirm whether a mobile appointment is suitable.
Why Choose Us
Supported Mercedes Models & Variants
| Mercedes Model | Variants |
|---|---|
| Classe A | 45 AMG / 45 AMG-S / 180D / 200D / 220D |
| AMG GT 4-Door | 53 AMG |
| Classe B | 180D / 200D / 220D |
| CLA | 45 AMG / 45 AMG-S / 180D / 200D / 220D |
| CLS | 53 AMG / 220D / 400D |
| Classe E | 53 AMG / 200D / 220D / 400D / 300DE |
| Classe G | 350D / 400D |
| GLA | 45 AMG-S / 180D / 200D / 220D |
| GLB | 45 AMG / 45 AMG-S / 180D / 200D / 220D |
| GLC | 200D / 220D / 300D / 350D / 400D / 300DE |
| GLE | 53 AMG / 300D / 350D / 400D / 350D E |
| GLS | 350D / 400D |
| Sprinter W910 | 317 CDI / 319 CDI / 419 CDI / 519 CDI |
| Classe V | 220D / 250D / 300D |
| Vito | 114 CDI / 116 CDI / 119 CDI / 124 CDI |
📍 Mobile Services
Mobile appointments in Birmingham and surrounding areas, subject to availability
Frequently Asked Questions
Which ECUs are covered by your service?
We focus on highly protected ECUs:
MD1CP001
MRD1.41
MRD1.42
How do you safely fix AdBlue and SCR system faults?
We use specialist diagnostic tools for supported protected ECUs. The proposed repair depends on the vehicle and the fault found; we explain the work before proceeding.
Can AdBlue system faults be safely fixed?
Some AdBlue and SCR faults can be diagnosed and repaired. We check the vehicle and ECU before recommending an appropriate course of action.
Is your service safe?
We explain the proposed work and any relevant risks before proceeding. Results and any warranty implications depend on the vehicle and the work carried out.
Can you provide mobile service?
Mobile appointments may be available in Birmingham and surrounding areas for suitable vehicles, subject to availability. Please tell us your location and vehicle details.
How can I book a service?
Bookings can be made through WhatsApp messaging or by calling us directly. All bookings are subject to availability. We strive to accommodate your requested time, but we may need to suggest alternative times depending on our schedule.
Why choose Mobile Car Key?
We assess selected Mercedes AdBlue and SCR faults in Birmingham. Share the model, year and fault details so we can confirm whether we can help.