Mercedes DPF & AdBlue Repair in Hyderabad
DPF Regeneration, SCR & AdBlue System Diesel Specialists
Metre Per Second is Hyderabad's specialist for Mercedes diesel emissions repair. From blocked DPF forced regeneration and cleaning to AdBlue/SCR faults, NOx sensor failures and AdBlue injector/metering problems on OM651, OM654 and OM656 engines, we restore your C220d, E220d, GLC220d or GLE300d to proper emissions compliance.
Why Choose Us for Mercedes DPF & AdBlue Repair in Hyderabad?
Hyderabad's stop-start traffic is hard on Mercedes diesels — short trips block the DPF and trigger AdBlue and NOx sensor faults. We diagnose the whole emissions chain, perform genuine forced regeneration or DPF cleaning, and fix SCR faults so your countdown-to-no-start warning disappears for good.
- Forced DPF regeneration and off-car DPF cleaning
- AdBlue/SCR fault and 'no restart' countdown fixes
- Genuine NOx sensor and AdBlue injector replacement
- Specialists in OM651, OM654 and OM656 diesels
- XENTRY soot-mass and ash-load analysis
- Root-cause repair, not delete — road-legal emissions
Diesel Emissions Diagnostic Equipment We Use
DPF and AdBlue faults span sensors, dosing, temperature and pressure. Our tooling reads the whole SCR/DPF chain accurately.
| Tool | System | Use Cases | Models Served |
|---|---|---|---|
| Mercedes XENTRY / SD Connect C5 | Emissions System Diagnostics | Soot mass, ash load, differential pressure, NOx values, AdBlue dosing, forced regeneration | OM651, OM654, OM656 diesels |
| Differential Pressure Analyzer | DPF Flow Assessment | Measuring back-pressure across the DPF to gauge blockage and confirm cleaning success | All Mercedes DPF-equipped diesels |
| DPF Off-Car Flush Machine | Filter Cleaning | Chemical and thermal cleaning of removed DPF/SCR bricks to restore flow without replacement | C-Class, E-Class, GLC, GLE diesels |
| AdBlue Pressure & Dosing Tester | SCR Dosing Analysis | Verifying AdBlue pump pressure, metering valve operation and injector spray | BlueTEC / SCR systems |
| 5-Gas / NOx Analyzer | Tailpipe Emissions | Confirming NOx reduction across the SCR catalyst before and after repair | All SCR diesel models |
| Exhaust Temperature Logger | Regen Verification | Monitoring EGT during active/forced regen to confirm the filter reaches burn-off temperature | All DPF diesels |
Mercedes Diesel Emissions Systems We Repair
Mercedes BlueTEC diesels use a coordinated DPF and SCR system. We repair every element on Indian-market OM6xx engines.
- Diesel Particulate Filter (DPF) — Ceramic filter trapping soot, cleaned by periodic regeneration Components: DPF brick, differential pressure sensor, exhaust temp sensors. Services: Forced regen, off-car cleaning, replacement.
- SCR Catalyst System — Selective Catalytic Reduction converting NOx using AdBlue Components: SCR catalyst, AdBlue tank/heater, dosing pump, mixer. Services: SCR diagnosis, catalyst replacement, dosing repair.
- AdBlue Metering & Injector — Precise AdBlue dosing into the exhaust upstream of SCR Components: Metering valve, AdBlue injector/nozzle, delivery module, lines. Services: Injector replacement, crystallisation cleaning, pump repair.
- NOx Sensors (upstream/downstream) — Sensors measuring NOx before and after SCR for closed-loop dosing Components: NOx sensor probes, control modules, wiring. Services: NOx sensor replacement, coding, wiring repair.
- OM654 / OM656 Integrated Exhaust — Engine-mounted DPF/SCR for fast light-off and NANOSLIDE cylinders Components: Close-coupled DPF+SCR, EGR cooler, temperature sensors. Services: Emissions module service, regen, EGR repair.
- Low-Pressure EGR — Exhaust gas recirculation reducing engine-out NOx Components: EGR valve, cooler, bypass flap, sensors. Services: EGR cleaning/replacement, cooler repair.
Genuine Diesel Emissions Parts & Fluids
We use genuine Mercedes or OE emissions components and approved AdBlue to keep the diesel emissions system reliable and compliant.
| Component | Spec Code | Replacement Policy | Warranty |
|---|---|---|---|
| Diesel Particulate Filter | Genuine MB DPF (model specific) | When ash load exceeds limit / cracked | 1 year |
| AdBlue (DEF) | ISO 22241 / MB approved | Top-up as consumed | N/A - consumable |
| AdBlue Injector/Nozzle | Genuine MB metering injector | When crystallised or leaking | 1 year |
| NOx Sensor | Genuine MB / Bosch/Continental OE | When reading implausible / faulted | 1 year |
| Differential Pressure Sensor | Genuine MB DPF pressure sensor | When regen misreads blockage | 1 year |
| AdBlue Dosing Pump | Genuine MB delivery module | When pressure build-up fails | 1 year |
Mercedes Diesel Emissions Specialists
Emissions repair rewards diagnostic discipline. Our diesel technicians are trained specifically on Mercedes DPF and SCR systems.
- Diesel Engine Certified — Mercedes-Benz Technical Training (OM651, OM654, OM656 diesel and emissions systems)
- Xentry Certified Diagnostician — Daimler AG (Regeneration, soot/ash analysis, NOx and dosing diagnosis)
- Emissions Systems Specialist — Bosch Automotive Training (SCR dosing, NOx sensors, common-rail diesel)
- DPF Cleaning Technician — Emissions Equipment Training (Off-car DPF cleaning and flow verification)
- EGR & Turbo Specialist — Mercedes-Benz Global Training (EGR cooler, low-pressure EGR, boost systems)
Specializations: Forced DPF regeneration via XENTRY, Off-car DPF/SCR chemical and thermal cleaning, AdBlue 'no restart' countdown fault clearing, NOx sensor (upstream/downstream) replacement & coding, AdBlue injector crystallisation and dosing repair, OM654/OM656 integrated exhaust module service, EGR valve and cooler repair, Diesel emissions root-cause diagnosis
Mercedes Diesel Models We Service
We repair DPF and AdBlue systems on every Mercedes diesel sold in Hyderabad.
| Model Range | Chassis Code | Key Systems | Common Issues |
|---|---|---|---|
| C 220d / C 200d | W205, W206 | OM651/OM654, DPF+SCR, AdBlue | DPF blockage from city driving, NOx sensor faults, AdBlue countdown |
| E 220d / E 350d | W213, W214 | OM654/OM656, integrated exhaust, SCR | AdBlue injector crystallisation, DPF ash load, dosing pump |
| GLC 220d / 300d | X253, X254 | OM654, 4MATIC, DPF+SCR | Incomplete regen, differential pressure sensor, EGR clogging |
| GLE 300d / 400d | W166, W167 | OM654/OM656, twin-turbo diesel, SCR | NOx sensor, AdBlue heater, DPF regeneration faults |
| GLS 350d / 400d | X166, X167 | OM656 inline-6 diesel, SCR | AdBlue dosing, DPF ash, EGR cooler leaks |
| Older BlueTEC (ML/GL/E) | W166, X166, W212 | OM642 V6 diesel, DPF+SCR | AdBlue tank heater, SCR catalyst, DPF blockage |
Mercedes DPF & AdBlue Repair Services
Complete diesel emissions repair for all Mercedes-Benz DPF and SCR systems.
| Service | Description | Price (INR) |
|---|---|---|
| Forced DPF Regeneration | XENTRY-controlled active regen with EGT and soot verification | ₹4,500-8,000 |
| Off-Car DPF Cleaning | Removal, chemical/thermal flush and flow test of DPF/SCR | ₹18,000-35,000 |
| DPF Replacement | Genuine DPF replacement with sensor renewal and coding | ₹85,000-2,20,000 |
| NOx Sensor Replacement | Upstream/downstream NOx sensor with coding | ₹18,000-45,000 |
| AdBlue Injector/Dosing Repair | Injector, metering valve or pump replacement and cleaning | ₹15,000-55,000 |
| SCR System Diagnosis | Full AdBlue/SCR diagnosis and countdown clearing | ₹3,500 |
Common Problems & Solutions
| Problem | Solution | Cost (INR) |
|---|---|---|
| 'Start not possible in X starts' AdBlue countdown | Diagnose SCR/NOx/dosing fault, repair and reset countdown via XENTRY | ₹15,000-55,000 |
| DPF warning light / limp mode | Assess soot/ash load, forced regen or off-car cleaning | ₹4,500-35,000 |
| NOx sensor fault (P220x codes) | Replace faulty upstream/downstream NOx sensor and code | ₹18,000-45,000 |
| AdBlue injector crystallised / not dosing | Clean or replace AdBlue injector and check metering pressure | ₹15,000-40,000 |
| Repeated failed regeneration | Fix differential pressure sensor / EGR and complete regen | ₹8,000-30,000 |
| AdBlue tank heater fault in cold weather | Heater/delivery module diagnosis and replacement | ₹12,000-38,000 |
Service Packages
- DPF/AdBlue Diagnosis — ₹3,000: XENTRY emissions scan, Soot & ash load read, AdBlue dosing check, NOx value analysis, Written report
- DPF Restore Package — ₹18,000+ (Most Popular): Off-car DPF cleaning, Sensor inspection, Forced regeneration, Flow verification, 1-year warranty
- SCR/AdBlue Repair Package — ₹25,000+: NOx sensor or injector, Dosing pressure repair, Countdown reset, Emissions verification, 1-year warranty
How It Works
- Fault Read — Scan emissions codes and note warnings like DPF light or AdBlue countdown.
- Data Analysis — Review soot mass, ash load, differential pressure, NOx values and dosing.
- Root-Cause Diagnosis — Isolate whether the fault is DPF, sensor, dosing or EGR related.
- Repair Plan — Regen, cleaning, or component replacement with a clear quote.
- Repair & Regen — Carry out repairs, then a verified forced regeneration if needed.
- Verify & Deliver — Confirm NOx reduction and clear countdown, road test and deliver.
Frequently Asked Questions
Why does my Mercedes DPF keep blocking?
Mostly short, low-speed city trips that never let the DPF reach regeneration temperature. Ash build-up, a bad differential pressure sensor or EGR issues also contribute. We find and fix the underlying cause.
What does the AdBlue countdown mean?
When the SCR system detects a fault (low AdBlue, bad NOx sensor, dosing problem) the car warns you and counts down starts until it won't restart. We diagnose and repair the SCR fault, then reset it with XENTRY.
Do you delete the DPF or AdBlue system?
No. We repair the emissions system to work correctly and stay road-legal, using genuine parts and proper regeneration rather than illegal deletes.
Can a blocked DPF be cleaned instead of replaced?
Often yes. If ash load is within limits we clean the DPF off-car and flow-test it, which is far cheaper than a new filter. Badly cracked or ash-saturated filters need replacement.
How long does DPF/AdBlue repair take?
A forced regen is same-day. Off-car DPF cleaning or NOx/injector replacement usually takes 1-2 days depending on parts availability.
Which engines do you cover?
All Mercedes diesels including OM651, OM654 and OM656 in C 220d, E 220d/350d, GLC 220d/300d, GLE 300d/400d and GLS 350d/400d.
Customer Reviews
My C220d went into limp mode with a DPF warning after months of short city drives. They cleaned the DPF off-car and ran a proper regen. Power is back and no warnings. Great diesel knowledge in Kukatpally.
I had the dreaded AdBlue 'no restart' countdown. They found a crystallised AdBlue injector and a faulty NOx sensor, replaced both with genuine parts and reset it via XENTRY. Lifesaver — dealer wanted double.
Repeated failed regenerations turned out to be a bad differential pressure sensor plus EGR clogging. They fixed the root cause instead of just clearing codes. Runs perfectly now. Honest team near Kompally.
Related Mercedes Services
Book Mercedes DPF & AdBlue Repair — Metre Per Second
Call +91 8555824915 or WhatsApp +91 8555824915 for a free quote.
Workshop: Plot No. M-8, Mahadevpuram, KPHB Road, Gajularamaram, Hyderabad, Telangana 500055