Oil changes and manufacturer-recommended maintenance, maintenance corresponding to Service A and Service B requirements, check-engine-light diagnostics, engine repair, turbocharged and diesel-engine diagnostics, automatic transmission service, 4MATIC systems, AIRMATIC suspension, brakes, suspension and steering, wheel bearings, electrical and electronic diagnostics, 12-volt batteries and 48-volt systems, air conditioning and heating, cooling systems, exhaust, BlueTEC and SCR systems, tires, alignments and much more.

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We can also diagnose many of the systems found in Mercedes-Benz plug-in hybrids and EQ electric vehicles.

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Trust your VF Auto technician for all your Mercedes-Benz maintenance and repair needs.

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We diagnose before we replace.

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On a Mercedes-Benz, this philosophy is particularly important. Multiple systems communicate with one another, and a fault in one area can create warning messages in several others.

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VF AUTO: YOUR MERCEDES-BENZ SPECIALIST

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Mercedes-Benz is known for innovation, comfort, performance and advanced technology.

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That sophistication also means effective diagnosis requires more than a generic code reader.

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Over the years, Mercedes-Benz has used a wide variety of engines, transmissions, suspension systems and electronic architectures. A turbocharged four-cylinder C-Class requires a different diagnostic approach from a diesel GL, V6 E-Class, AMG V8 or EQ electric vehicle.

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At VF Auto, we tailor our approach to the specific generation, engine and equipment installed in your vehicle.

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COMMON MERCEDES-BENZ PROBLEMS WE DIAGNOSE AND REPAIR

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Timing-chain noise during startup

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Certain Mercedes-Benz engines can develop a brief rattling or timing-chain noise during startup.

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Mercedes-Benz has published technical information addressing secondary timing-chain noise on certain M276, M278 and M157 engines. Depending on the application, chain-tensioner operation and retention of oil pressure can contribute to the condition.

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Startup noise should not be diagnosed by sound alone.

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VF Auto can evaluate timing-related fault codes, adaptation values, oil-pressure concerns when appropriate and the mechanical condition of the timing system before recommending repairs.

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Timing-chain concerns – OM642 diesel engines

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Certain OM642 diesel engines can also develop timing-chain elongation as mileage accumulates.

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A rattling sound for several seconds after engine startup may warrant measurement and inspection of timing-chain wear.

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The OM642 was used across numerous popular Mercedes-Benz diesel models, making accurate diagnosis important before undertaking major timing work.

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Engine-oil leaks

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As Mercedes-Benz vehicles age, engine-oil leaks can develop from valve covers, oil-filter housings, gaskets, turbocharger lines, oil pans and other components.

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On certain engines, oil can travel over several areas before becoming visible underneath the vehicle.

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Replacing the gasket closest to the visible oil is therefore not always the correct repair.

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We inspect and clean the affected area when necessary to identify the actual origin of the leak.

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Thermostat and cooling-system problems

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Water pumps, thermostats, radiators, expansion tanks, fittings and hoses all play an important role in maintaining correct engine temperature.

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Mercedes-Benz has documented thermostat-related conditions on certain M274 engines where the engine does not reach its expected operating temperature and fault P0128 may be present.

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At the other extreme, leakage or poor coolant circulation can lead to overheating.

We can pressure-test the system, analyze actual temperature data and locate the problem before replacing components.

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AIRMATIC – vehicle lowering or sitting unevenly

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AIRMATIC air suspension provides exceptional comfort when operating correctly.

As the system ages, however, leakage can develop in an air spring, line, valve block or another component.

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Symptoms can include:

• One corner sitting lower than the others

• The vehicle lowering after several hours

• The compressor running frequently

• A “Vehicle Too Low” warning

• Suspension warning messages

• The vehicle failing to raise

 

Mercedes-Benz has published diagnostic information relating to AIRMATIC leakage and vehicles dropping at one axle.

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Automatically replacing the compressor is not always the correct solution.

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If an air spring is leaking and forcing the compressor to operate continuously, replacing only the compressor can allow the same problem to return.

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We locate the leak and evaluate the complete system.

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4MATIC all-wheel-drive concerns

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The 4MATIC system uses multiple mechanical and electronic components to distribute power between the wheels.

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A vibration, noise, ABS/ESP warning or unusual driving behaviour can involve a wheel-speed sensor, wheel bearing, driveshaft, differential, transfer case, tires or electronic controls.

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Significantly different tire sizes or wear levels can also affect certain all-wheel-drive systems.

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We diagnose the complete system before replacing expensive drivetrain components.

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7G-TRONIC and 9G-TRONIC transmission concerns

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Mercedes-Benz automatic transmissions rely on a combination of mechanical, hydraulic and electronic systems.

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Harsh shifting, delayed engagement, limp mode or a transmission warning can involve:

• Fluid level or condition

• Sensors

• Valve-body operation

• Transmission electronics

• Adaptation values

• Internal mechanical problems

 

A transmission trouble code therefore does not automatically mean the complete transmission requires replacement.

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We analyze operating data and system condition before recommending the appropriate repair.

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Turbocharger and boost-control concerns

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Most modern Mercedes-Benz engines use one or more turbochargers.

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Reduced power, a check engine light or a boost-pressure fault can be caused by the turbocharger, but it may also result from intake leakage, boost pipes, wastegate controls, valves, sensors or electronic controls.

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On twin-turbo engines, proper diagnosis becomes even more important.

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A boost problem does not automatically mean the turbocharger needs replacement.

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We test the complete system before condemning an expensive component.

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BlueTEC diesel – AdBlue, SCR and NOx sensor concerns

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Many Mercedes-Benz diesel vehicles sold in Canada use BlueTEC technology and an SCR emissions system with DEF/AdBlue.

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A check engine light or AdBlue warning can involve several components:

• NOx sensors

• DEF heating system

• DEF injector

• Pump

• Level sensor

• SCR catalyst

• Wiring

• Software

• Another emissions-system problem

 

Mercedes-Benz Canada has also offered specific field measures for certain 2009–2016 OM642 and OM651 BlueTEC II diesel vehicles.

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An AdBlue message therefore does not automatically mean a complete tank or a particular sensor requires replacement.

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We diagnose the system before recommending repairs.

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12-volt batteries and electrical problems

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Modern Mercedes-Benz vehicles can be particularly sensitive to insufficient system voltage.

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A weak 12-volt battery can trigger several messages at the same time involving:

• ABS

• ESP

• Suspension

• Steering

• Braking

• Start/Stop

• Transmission

• Driver-assistance systems

 

That does not necessarily mean all of those systems have failed.

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We begin by checking the battery, charging system, grounds and power supplies before replacing electronic modules.

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48-volt electrical systems

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Many newer Mercedes-Benz vehicles use a 48-volt electrical system in addition to the conventional 12-volt system.

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It may power an integrated starter-generator, mild-hybrid functions and other electrically operated components.

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Mercedes-Benz has published battery-management software campaigns covering certain E-Class, CLS, GLE, GLS and AMG GT models equipped with 48V systems.

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Depending on the condition, a 48V problem can trigger warnings involving the 48V system, 12V system, transmission or reduced engine output.

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These vehicles require a diagnostic approach specifically suited to their dual-voltage architecture.

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ABS, ESP and driver-assistance warnings

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ABS and ESP communicate with many other vehicle systems.

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A wheel-speed-sensor problem can sometimes trigger several warnings and temporarily disable multiple driver-assistance features.

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However, a sensor code does not always mean the sensor itself has failed. A wheel bearing, magnetic encoder, wiring problem or power-supply fault can create similar symptoms.

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We test the circuit before replacing components.

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Cameras, radar and driver-assistance systems

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Modern Mercedes-Benz vehicles may use technologies such as DISTRONIC, blind-spot monitoring, automatic braking, lane assistance, 360-degree cameras and automated parking systems.

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A warning message can result from a sensor, camera, radar unit, calibration issue, low system voltage or another vehicle system.

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Proper diagnostics allow us to determine what actually needs repair.

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Brakes, suspension and steering

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The weight, power and size of many Mercedes-Benz vehicles place significant demands on their suspension and braking systems.

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Control arms, bushings, ball joints, links, shocks, wheel bearings, rotors and calipers can eventually develop wear or looseness.

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A front-end noise does not automatically mean a particular control arm requires replacement.

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We locate the source before recommending repairs.

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Mercedes-Benz hybrid and EQ electric vehicles

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Mercedes-Benz plug-in hybrid and electric vehicles use high-voltage systems incorporating batteries, electric motors, inverters, onboard chargers, DC/DC converters and specialized cooling circuits.

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A high-voltage warning or charging problem does not automatically mean the traction battery has failed.

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The concern may involve the 12-volt system, onboard charger, power electronics, cooling system, sensors, a control module or the high-voltage system itself.

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Accurate diagnosis is especially important before expensive electric-drive components are replaced.

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MERCEDES-BENZ PREVENTIVE MAINTENANCE

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Regular maintenance using the correct products and specifications is one of the best ways to preserve Mercedes-Benz performance and reliability.

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VF Auto can take care of your Mercedes-Benz maintenance, including:

• Oil changes using the appropriate specification

• Engine, cabin and oil filters

• Maintenance corresponding to Service A and Service B requirements

• Spark plugs

• Brake fluid

• Coolant

• Automatic transmission service

• Differentials and 4MATIC systems

• AIRMATIC inspections

• Diesel-engine maintenance

• BlueTEC, SCR and AdBlue inspections

• Brakes

• 12-volt battery and charging system

• 48-volt system diagnostics

• Tires and alignments

• Suspension and steering

• Air conditioning

• Electronic diagnostics

• Hybrid and electric-system inspections

• Complete vehicle inspections

 

On turbocharged engines, using the correct oil specification, maintaining the proper oil level and following appropriate service intervals are particularly important for protecting the engine, timing system and turbochargers.

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We can also inspect your Mercedes-Benz and clearly explain what needs attention now, what should be planned for the near future and what can safely wait.

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No surprises. No unnecessary repairs. Just what your Mercedes-Benz actually needs.

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WHY CHOOSE VF AUTO FOR YOUR MERCEDES-BENZ?

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Mercedes-Benz-specialized technicians

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Our team has the experience required to work with Mercedes-Benz gasoline and diesel engines, transmissions, 4MATIC, AIRMATIC, BlueTEC, 48-volt systems and the numerous electronic systems used throughout the brand.

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Advanced diagnostics

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A modern Mercedes-Benz can contain dozens of electronic control modules.

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Simply reading fault codes is not enough.

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Our professional diagnostic equipment allows us to analyze operating data, adaptations and multiple vehicle systems to determine why a fault is present.

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Gasoline and BlueTEC diesel experience

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Many general repair shops are less familiar with Mercedes-Benz diesel engines.

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Our approach considers the engine, turbocharger, fuel-injection system and SCR/AdBlue emissions system together rather than treating every code as a separate failure.

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AIRMATIC and 4MATIC knowledge

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These systems should be diagnosed before expensive parts are replaced.

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We evaluate overall operation to identify the cause of the problem rather than simply replacing the component showing the symptom.

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European electronic-system knowledge

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Mercedes-Benz uses sophisticated vehicle networks in which numerous modules share information.

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One failure can therefore create fault codes in several systems.

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Our goal is to identify the original cause rather than replace every component associated with a stored code.

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Competitive and transparent pricing

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Driving a Mercedes-Benz doesn't mean every maintenance service and repair needs to come with dealership pricing.

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We explain recommended repairs and costs before performing the work.

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Quality parts

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We can install genuine Mercedes-Benz components or high-quality European replacement parts depending on the application, your preferences and your budget.

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Complete automotive service

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Maintenance, general mechanical repair, gasoline and diesel engines, turbochargers, transmissions, 4MATIC, AIRMATIC, BlueTEC, electronic diagnostics, 48V systems, suspension, brakes, tires, alignments, air conditioning, hybrids and electric vehicles.

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A true alternative to the Mercedes-Benz dealership

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Your Mercedes-Benz deserves a shop that understands what makes it different.

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At VF Auto, our goal is to provide the expertise your vehicle requires while offering a more personal, transparent and cost-effective approach.

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YOUR MERCEDES-BENZ DESERVES A SPECIALIST

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Whether your Mercedes-Benz simply needs scheduled maintenance or you're dealing with timing-chain noise, an oil or coolant leak, AIRMATIC problem, 4MATIC concern, AdBlue warning, transmission problem, 48V warning or difficult electronic fault, VF Auto is ready to help.

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Our philosophy is simple:

Diagnose it properly.
Repair what is necessary.
Avoid unnecessary expenses.
 

Preserve the performance, comfort and quality of your Mercedes-Benz.

 

Contact VF Auto to schedule maintenance or repair for your Mercedes-Benz.

 

MERCEDES-BENZ MODELS

A-Class, B-Class, C-Class, CLA, CLK, CLS, E-Class, CL, S-Class, SLK, SLC, SL, GLA, GLB, GLK, GLC, M-Class / ML, GLE, GL, GLS, G-Class, R-Class, AMG GT, EQB, EQE, EQE SUV, EQS, EQS SUV and other Mercedes-Benz and Mercedes-AMG models.

 

VF AUTO MÉCANIQUE LONGUEUIL

1616 rue Verchères
Longueuil, QC J4K 2Z7

Parts & Service: 450-928-1011

 

We serve customers throughout Longueuil, Saint-Hubert, Brossard, Saint-Lambert, Boucherville, Greenfield Park and surrounding areas.

Monday to Friday: 8 AM–5 PM