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MERCEDES-BENZ GLS (2017–2024): Full Technical Specs & OBD2 Diagnostics
Built 2017–2024 · all production years covered on this single page
4.0L Turbo V8 • Gasoline
© Wikimedia Commons CC BY-SA
TroubleAtlas Score
An independent value score for the Mercedes-Benz Gls (2017–2024) — reliability, safety, cost, parts, upkeep and documentation. Owing nothing to the manufacturer.
Scorecard · each voice 0–10
Reliabilityn/a
Safety & recallsn/a
Repair cost7.8
Parts & repairability7.3
Maintenance & durability6.2
Documentation & supportn/a
Independent · Verified · Never for sale
Every figure on this Mercedes-Benz Gls (2017–2024) page is aggregated and cross-checked against more than 6.6 million real workshop operations, NHTSA records and OEM technical sources — and updated continuously. No invented estimates.
The Mercedes-Benz Gls (2017–2024) uses Mercedes-Benz 229.71 0W-20 engine oil. Its battery is group H8 (BCI), rated at 900A cold-cranking amps. It is powered by a 4.0L Turbo V8 engine. Use the sections below for verified fluids, battery, OEM tyres, the maintenance schedule, recommended parts and the most commonly reported OBD2 fault codes for this vehicle.
Common problems
Common repairs
Scheduled maintenance
Fluids & lubricants
Battery
Fault codes (OBD2)
Dashboard lights
Parts comparator
Accessories & tools
Tyres
Recalls & TSB
Complaints
Workshops nearby
COMMON PROBLEMS
Transmission fault signal (TCM)MODERATE
The transmission module detected a fault — check separate transmission codes.
Related codes: P0700
Misfire / Loss of cylinderMODERATE
Rough running, idle vibration, power loss.
Related codes: P0300
Thermostat: coolant temperature lowLOW
Thermostat stuck open — engine does not reach operating temperature.
Related codes: P0128
Battery/system voltage lowLOW
System voltage below 10V — check alternator, battery or wiring.
Related codes: P0562
P0011LOW
Check with an OBD2 scanner.
Related codes: P0011
COMMON REPAIRS
Front brake pads
Difficulty: Medium
1.1h
€77 – €99
Rear brake pads
Difficulty: Medium
1.2h
€84 – €108
Engine oil change
Difficulty: Easy
0.4h
€28 – €36
ABS Module
Difficulty: Hard
2.7h
€189 – €243
AVERAGE INDICATIVE COSTS
Prices may vary by area and workshop.
Full service
€ 120 – € 200
Full brake service
€ 180 – € 300
Spark plug replacement
€ 80 – € 140
Electronic diagnosis
€ 40 – € 70
OFFICIAL LABOUR TIMES (OLP)
Standard labour hours from a database of 6.6M+ real shop operations, with an indicative labour-cost estimate for your country.
Brakes8 operations
| Operation | Labour hours (OLP) | Est. labour cost |
|---|---|---|
| ABS Module | 2.7h | € 121–€ 202 |
| ABS Pump | 3.4h | € 153–€ 255 |
| ABS Tone Ring | 2.0h | € 90–€ 150 |
| ABS Wheel Speed Sensor - Front | 1.1h | € 49–€ 82 |
| ABS Wheel Speed Sensor - Rear | 1.1h | € 49–€ 82 |
| Brake Bleed - All Four | 1.4h | € 62–€ 105 |
| Brake Booster | 3.4h | € 153–€ 255 |
| Brake Booster Check Valve | 0.4h | € 18–€ 30 |
Cooling8 operations
| Operation | Labour hours (OLP) | Est. labour cost |
|---|---|---|
| Coolant Bypass Pipe | 2.0h | € 90–€ 150 |
| Coolant Flush | 1.4h | € 62–€ 105 |
| Coolant Reservoir | 0.7h | € 31–€ 52 |
| Coolant Temperature Sensor | 0.7h | € 31–€ 52 |
| Cooling Fan Assembly | 1.4h | € 62–€ 105 |
| Cooling Fan Clutch | 1.4h | € 62–€ 105 |
| Cooling Fan Motor | 2.0h | € 90–€ 150 |
| Cooling Fan Relay | 0.4h | € 18–€ 30 |
Electrical8 operations
| Operation | Labour hours (OLP) | Est. labour cost |
|---|---|---|
| Airbag - Driver | 1.4h | € 62–€ 105 |
| Airbag - Passenger | 2.0h | € 90–€ 150 |
| Airbag - Side | 2.7h | € 121–€ 202 |
| Airbag Module/Computer | 1.4h | € 62–€ 105 |
| Alternator | 2.0h | € 90–€ 150 |
| Alternator Belt | 0.7h | € 31–€ 52 |
| Amplifier | 2.0h | € 90–€ 150 |
| Antenna | 0.7h | € 31–€ 52 |
Engine8 operations
| Operation | Labour hours (OLP) | Est. labour cost |
|---|---|---|
| Boost Pressure Sensor | 0.7h | € 31–€ 52 |
| Camshaft Position Sensor | 1.4h | € 62–€ 105 |
| Camshaft R&R | 10.8h | € 486–€ 810 |
| Connecting Rod Bearings | 20.2h | € 909–€ 1515 |
| Crankshaft Position Sensor | 1.4h | € 62–€ 105 |
| Crankshaft R&R | 27.0h | € 1215–€ 2025 |
| Cylinder Head R&R | 8.1h | € 364–€ 607 |
| Cylinder Head Resurface | 10.8h | € 486–€ 810 |
Exhaust8 operations
| Operation | Labour hours (OLP) | Est. labour cost |
|---|---|---|
| Air Injection Check Valve | 1.1h | € 49–€ 82 |
| Catalytic Converter - California | 2.0h | € 90–€ 150 |
| Catalytic Converter - Direct Fit | 2.0h | € 90–€ 150 |
| Catalytic Converter - Universal | 2.7h | € 121–€ 202 |
| Downpipe | 2.7h | € 121–€ 202 |
| EGR Cooler | 4.1h | € 184–€ 307 |
| EGR Tube | 2.0h | € 90–€ 150 |
| EGR Valve | 1.4h | € 62–€ 105 |
Fuel system8 operations
| Operation | Labour hours (OLP) | Est. labour cost |
|---|---|---|
| Charcoal Canister | 1.4h | € 62–€ 105 |
| EVAP Purge Valve | 1.1h | € 49–€ 82 |
| EVAP Vent Valve | 1.1h | € 49–€ 82 |
| Fuel Cap | 0.1h | € 4–€ 7 |
| Fuel Filler Neck | 2.0h | € 90–€ 150 |
| Fuel Filter | 0.7h | € 31–€ 52 |
| Fuel Filter - In-Tank | 2.7h | € 121–€ 202 |
| Fuel Injector - Single | 1.4h | € 62–€ 105 |
HVAC8 operations
| Operation | Labour hours (OLP) | Est. labour cost |
|---|---|---|
| AC Accumulator | 2.0h | € 90–€ 150 |
| AC Clutch Coil | 2.0h | € 90–€ 150 |
| AC Compressor | 3.4h | € 153–€ 255 |
| AC Compressor Clutch | 2.7h | € 121–€ 202 |
| AC Compressor Oil Add | 0.7h | € 31–€ 52 |
| AC Condenser | 3.4h | € 153–€ 255 |
| AC Evaporator | 8.1h | € 364–€ 607 |
| AC Expansion Valve (TXV) | 5.4h | € 243–€ 405 |
Steering8 operations
| Operation | Labour hours (OLP) | Est. labour cost |
|---|---|---|
| Center Link/Drag Link | 2.0h | € 90–€ 150 |
| Electric Power Steering Module | 2.0h | € 90–€ 150 |
| Electric Power Steering Motor | 3.4h | € 153–€ 255 |
| Idler Arm | 1.4h | € 62–€ 105 |
| Pitman Arm | 1.6h | € 72–€ 120 |
| Power Steering Fluid Flush | 0.7h | € 31–€ 52 |
| Power Steering Gear Box | 4.7h | € 211–€ 352 |
| Power Steering Hose - High Pressure | 1.4h | € 62–€ 105 |
Suspension8 operations
| Operation | Labour hours (OLP) | Est. labour cost |
|---|---|---|
| Air Line | 1.4h | € 62–€ 105 |
| Air Spring/Air Bag | 2.0h | € 90–€ 150 |
| Air Suspension Compressor | 2.0h | € 90–€ 150 |
| Air Suspension Height Sensor | 1.4h | € 62–€ 105 |
| Air Suspension Valve Block | 2.7h | € 121–€ 202 |
| Ball Joint - Lower | 2.4h | € 108–€ 180 |
| Ball Joint - Upper | 2.0h | € 90–€ 150 |
| Ball Joints - Upper and Lower | 4.1h | € 184–€ 307 |
Transmission8 operations
| Operation | Labour hours (OLP) | Est. labour cost |
|---|---|---|
| Kickdown Cable | 1.1h | € 49–€ 82 |
| Neutral Safety Switch | 1.4h | € 62–€ 105 |
| Overdrive Solenoid | 2.7h | € 121–€ 202 |
| Shift Cable | 2.0h | € 90–€ 150 |
| Shift Linkage | 1.4h | € 62–€ 105 |
| Transmission Control Module | 1.4h | € 62–€ 105 |
| Transmission Cooler Lines | 1.4h | € 62–€ 105 |
| Transmission Filter | 1.4h | € 62–€ 105 |
WORKSHOP LABOUR RATES BY COUNTRY
Average independent-workshop hourly labour rates, to estimate repair costs in your country.
🇩🇪Germany€95/h
🇪🇸Spain€55/h
🇫🇷France€75/h
🇮🇹Italy€45/h
🇬🇧UK£80/h
🇺🇸USA$120/h
Reference rate
€45/h
Source: Eurostat 2024
💧 FLUIDS & LUBRICANTS
🔧 SCHEDULED MAINTENANCE
Brake Fluid Flush And Replacement24 months
Engine Oil And Filter Change (Service A)16,000 km / 12 months
Check All Fluid Levels (Service A)16,000 km / 12 months
Inspect Brake System (Service A)16,000 km / 12 months
Tire Inflation Check And Rotate (Service A)16,000 km / 12 months
Check Cabin Air Filter, Wiper Blades (Service A)16,000 km / 12 months
Check Battery And Charging System (Service A)16,000 km / 12 months
Engine Air Filter Replacement (Service B)32,000 km / 24 months
📋 RECALLS & TSB (0)
No official recall verified for this vehicle in the NHTSA database.
COMMON OBD2 CODES TO CHECK
P0420
P0420
Powertrain
P0171
P0171
Powertrain
P0300
P0300
Powertrain
P0128
P0128
Powertrain
P0455
P0455
Powertrain
P0700
P0700
Transmission
P0442
P0442
Powertrain
P0172
P0172
Powertrain
P0401
P0401
Powertrain
All documented fault codes for this vehicle
The most documented diagnostic codes for this model, by system and severity. Tap a code for the full guide.
P0455
powertrain
LOW⏱ 0.62h avgP0442
powertrain
LOW⏱ 0.62h avgP0440
powertrain
LOW⏱ 0.78h avgP0420
powertrain
MEDIUM⏱ 1.24h avgP0300
powertrain
HIGH⏱ 1.22h avgP0172
powertrain
MEDIUM⏱ 1.13h avgP0171
powertrain
MEDIUM⏱ 0.95h avgP0730
transmission
MEDIUM⏱ 1.25h avgP0700
transmission
HIGH⏱ 1.25h avgP0401
powertrain
MEDIUM⏱ 1.25h avgP0011
powertrain
MEDIUM⏱ 5.4h avgU0100
network
HIGHP0562
electrical
MEDIUM⏱ 0.58h avgP0128
powertrain
MEDIUM⏱ 0.88h avg
DASHBOARD WARNING LIGHTS — UNIVERSAL GUIDE
53 warning lights classified by urgency. Appears on your vehicle? Check the urgency level.
Show all dashboard warning lights
🔴 IMMEDIATE STOP — pull over
Oil Pressure WarningEngine
Engine Temperature WarningCooling
Brake System WarningBrakes
Immobilizer / Key FaultSecurity
🟠 WARNING — check soon
Malfunction Indicator Light (MIL) / Check EngineEngine
Diesel Particulate Filter (DPF)Emissions
Battery / Charging SystemElectrical
Low Fuel WarningFuel
ABS WarningBrakes
Brake Pad Wear IndicatorBrakes
Electronic Parking Brake (EPB)Brakes
Power Steering WarningSteering
ESC / Stability Control FaultChassis
Tire Pressure Warning (TPMS)Chassis
Transmission Temperature WarningTransmission
Transmission / Gearbox FaultTransmission
Airbag / SRS WarningActive safety
EGR / Exhaust Gas Recirculation FaultEmissions
Catalytic Converter / Emissions FaultEmissions
AdBlue / DEF Level LowEmissions
Coolant Level LowCooling
Hybrid / EV System WarningHybrid
EV Charge System FaultHybrid
12V Battery (Hybrid/EV Auxiliary)Hybrid
Suspension Fault / Air SuspensionSuspension
CAN Bus / Network Communication FaultNetwork
Water in Fuel FilterFuel
Diesel Injector FaultFuel
Steering Angle Sensor FaultSteering
Turbo / Boost Pressure FaultEngine
Regenerative Braking Fault (Hybrid/EV)Hybrid
🟡 MONITOR
Fuel Cap / Evap SystemEmissions
4WD / AWD SystemDrivetrain
Bulb Failure WarningLighting
Headlight Range / Leveling FaultLighting
Service / Maintenance DueMaintenance
A/C System FaultHvac
Clutch Wear WarningTransmission
Cruise Control / ACC FaultADAS
🔵 INFORMATION
Engine Temperature Low (Blue)Cooling
Glow Plug / Diesel PreheatEngine
Traction Control / ESC OffChassis
Seatbelt ReminderActive safety
Rear Fog Light IndicatorLighting
Lane Departure / LDWS WarningADAS
Forward Collision Warning (FCW/AEB)ADAS
Blind Spot Monitor FaultADAS
Rear Parking Sensor / Camera FaultADAS
Windshield Washer Fluid LowMaintenance
Door Open WarningBody
Hood / Trunk Open WarningBody
Gear Shift Indicator (Manual)Transmission
Sport / Performance Mode ActiveTransmission
REPORTED COMPLAINTS & PROBLEMS (NHTSA)
16 owner complaints filed with the U.S. National Highway Traffic Safety Administration (NHTSA) for the Mercedes-Benz Gls across model years 2017–2024. These are real, verified reports submitted by vehicle owners.
4 crash reports 1 fire
Complaints by model year (most reported first)
Model year 202416
Most reported components (all years)
Unknown Or Other4
Electrical System3
Engine2
Forward Collision Avoidance2
Fuel/Propulsion System1
Structure1
Sample reports
The glass panel between the windshield and the sunroof spontaneously shattered. I wasn't aware of this and had just noticed increased wind noise while driving for a few weeks until I noticed that it was due to shattered glass panel. It i… (MY 2024)
The contact owns a 2024 Mercedes-Benz GLS450. The contact stated while the vehicle was idling, the vehicle shut off with several unknown warning lights illuminated. The contact also stated that a message to exit the vehicle was displayed… (MY 2024)
I would like to report that there is a Key Fob connection problem with my car causing it to lock with the key inside the car. This could pose safety issues. I placed my purse with my Key Fob and phone on the passenger seat. I loaded ot… (MY 2024)
The contact owns a 2024 Mercedes-Benz GLS580. The contact stated while driving at approximately 70 MPH, the contact heard a loud popping sound inside the cabin of the vehicle and became aware that the rear section of the panoramic sunroo… (MY 2024)
Source: NHTSA complaints database (U.S. data.gov). Figures cover production years 2017–2024.
Frequently Asked Questions
What does fault code P0300 mean on the Mercedes-benz Gls?
Random/Multiple Cylinder Misfire Detected This code is among the most documented for this model — tap it in the OBD2 section for the full step-by-step guide.
What does fault code P0128 mean on the Mercedes-benz Gls?
Coolant temperature below thermostat regulating temperature — thermostat stuck open or faulty This code is among the most documented for this model — tap it in the OBD2 section for the full step-by-step guide.
What does fault code P0011 mean on the Mercedes-benz Gls?
A Camshaft Position Timing Over-Advanced or System Performance (Bank 1) This code is among the most documented for this model — tap it in the OBD2 section for the full step-by-step guide.
What is the right battery for the Mercedes-Benz Gls (2017–2024)?
The battery specified for the Mercedes-Benz Gls (2017–2024) is group H8 (BCI), with a cold cranking rating of 900A. See the Battery section on this page for the main cross-references between brands.
What engine oil should I use on the Mercedes-Benz Gls (2017–2024)?
The engine oil specification for the Mercedes-Benz Gls (2017–2024) is Mercedes-Benz 229.71 0W-20. Always use the viscosity grade approved by the manufacturer: a different oil can reduce engine protection and void the warranty. Check the change interval in the Maintenance section.
Which OBD2 fault codes are commonly documented for the Mercedes-Benz Gls (2017–2024)?
Commonly documented OBD2 codes across many vehicles include: P0420, P0300, P0171. Find the full description, likely causes and estimated repair costs in the OBD2 Codes section on this page.
How often should the Mercedes-Benz Gls (2017–2024) be serviced?
Routine maintenance for the Mercedes-Benz Gls (2017–2024) typically includes an oil change every 6,000–9,000 miles (10,000–15,000 km), an air filter every 12,000–18,000 miles (20,000–30,000 km) and a brake inspection every 12,000 miles (20,000 km). Check the full plan with specific intervals in the Scheduled Maintenance section on this page.
This spec sheet is updated with data verified from OEM sources and shop databases. If you spot an inaccuracy or have additional data on the Mercedes-Benz Gls (2017–2024), let us know — every correction improves quality for all users.