MercedesCLS5502018Overview/mercedes/cls550/2018/base/

2018 Mercedes CLS550

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2018 CLS550.

Model year2018201720132010

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Lug nut torque96 ft-lbsOEM · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI 48; Auxiliary: 400 · 80 O.E. AmpHrs; Auxiliary: 200 CCA; Battery Backup: 1.2 O.E. AmpHrs CCA battery, OE oil filter 0309970748. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

Battery groupBCI 48; Auxiliary: 400 · 80 O.E. AmpHrs; Auxiliary: 200 CCA; Battery Backup: 1.2 O.E. AmpHrs CCAOEM · verified
Tire sizeP255/40R18; Rear: P285/35R18OEM · verified
Wheel / rim8.5; Rear: 9.5 inOEM · verified

OE service part numbers OEM · verified

Engine oil filter0309970748 alt 2781840280
Spark plug0041598103
Battery000982960864 alt 0019828108
Front wiper blades2128201700
Thermostat2782001600

Diagrams

Fuse box diagram15 fusesPower distribution wiring5 sheets

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

Torque lug nuts to 96 ft-lbs, the oil drain plug to 20.0 ft-lbs. The firing order is 1-5-4-2-6-3-7-8.

Engine torques

Crankshaft Position (CKP) Sensor Bolt(s)7.4 ft-lbs
Camshaft Position (CMP) Sensor Bolt(s)7.4 ft-lbs
Intake Manifold to Engine Bolts6.6 ft-lbs
Oil Pan to Block Bolts7.4 ft-lbs
Engine Oil Pan Drain Plug20.0 ft-lbs

Chassis torques

Lug Nuts96 ft-lbs

Ignition

Cylinder Firing Order1-5-4-2-6-3-7-8
Spark Plug ManufacturerMercedes-Benz
Spark Plug Gap.031 in
Spark Plug Torque17 ft-lbs

Battery & A/C

Standard BCI Group Number48; Auxiliary: 400
Standard BCI Cranking Performance80
Optional BCI Group Number49; 49
Optional BCI Cranking Performance92 O.E. AmpHrs; 95 O.E. AmpHrs cca

Brakes

Brake Caliper Bolt to Carrier TorqueRear: 18 ft-lbs
Brake Caliper Carrier to Hub Bolt TorqueRear: 100 ft-lbs
Vented Rotor Minimum Thickness for ReplacementFront: 1.338; Rear: .843

Multi-step torque procedures OEM · verified

Connecting Rod (Large End) Bearings — tightening sequence 1 stages
144.0 inch lbs., Step 2: 18.0 ft. lbs., Step 3: 9044 in
Engine Flywheel Bolts — tightening sequence 1 stages
115.0 ft. lbs., Step 2: 33.0 ft. lbs., Step 3: 9015 ft. lbs
Oil Pump to Cylinder BLock Bolts/Studs — tightening sequence 1 stages
144.0 inch lbs., Step 2: 15.044 in

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific CLS550. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Fuse box & wiring diagrams

Interactive fuse-box and wiring references for this vehicle, searchable by circuit.

Reference guides

Cross-vehicle references for the kinds of data on this page.