Mercedes-Benz CLS 63 AMG Service Guide

Mercedes-Benz CLS 63 AMG Service Guide

Mercedes-Benz CLS 63 AMG Service Guide Image

The CLS-class by Mercedes-Benz pioneered a new segment of automobiles that previously didn’t exist: the four-door coupe. This segment combines the practicality of a four-door sedan with the sleek, stylish design of two-door coupes. Since it’s introduction in 2004, the CLS has seen many other four-door coupes enter the marketplace by rival carmakers. However, with close to 130,000 units being produced up until 2010, the four-door coupe pioneer has proven to be a sales success that is unmatched by its rivals.

When Mercedes-Benz’s performance arm, AMG, got their hands on the CLS, they produced a car with performance to match it’s styling. The first iteration, the CLS 55 AMG received the ubiquitous 5.5L supercharged V8. However it was only produced for 2 years (2004-2006) before being replaced by the CLS 63 AMG with a more powerful 6.2L V8. In 2010, the engine was again replaced by a twin-turbo 5.5L V8.

This Mercedes-Benz CLS 63 AMG Service Guide will be of use to owners looking to get the most out of their fine German automobile.

It will detail the recommended maintenance schedule to keep the performance and life of your CLS 63 AMG at it’s full potential. This service guide will focus on the 63 AMG, as opposed to the 55 AMG, solely due to the fact that the 63 AMG was produced in larger numbers with a longer production run.

GI Automotive has skilled technicians and the factory tools to carry out all factory recommended maintenance procedures.

Mercedes-Benz CLS 63 AMG Service Guide Interior

Engine, Oil, Transmission, Clutch

Every engine in the CLS 63 AMG is hand made by a top engine assembler in AMG. The 5.5L twin-turbo V8 is capable of producing up to 577 hp in S trim, with 550 hp in the non S trim. It is mated to a 7-speed automated manual Speedshift MCT transmission.

The Mercedes-Benz CLS 63 AMG Service Guide recommends these service intervals:

  • Every 9,000 miles – Service A
  • Every 18,000 miles – Service B
  • Every 25,00 miles –Replace Brake Fluid
  • Every 36,000 miles – Replace ATF Fluid, Replace Rear Axle Fluid
  • Every 45,000 miles – Replace Air Filter, Replace Spark Plugs

Service A – Every 9,000 Miles

Check all lights, warning lights and horn operation, perform oil change and filter replacement, replace remote key battery, check cooling system strength and adjust level if necessary, check brake fluid level, check brake pad thickness (front and rear), inspect tire condition and set pressures, check wipers, washer jets and headlamp cleaning system.

Mercedes-Benz CLS 63 AMG Service Guide Spark Plugs

Service B – Every 18,000 Miles

Includes everything in Service A in addition to: Inspect suspension system, inspect poly V belt, visual check for leaks on major components, check engine air filter and replace if necessary, check seatbelts and anchor system, check steering components, check driveline components, replace cabin air filter, check and correct headlamp settings, check bodywork for corrosion, rotate tires to promote even wear, clean water cowling to ensure proper drainage

Mercedes-Benz CLS 63 AMG Service Guide Oil Filter

Brakes, Rotors, Pads, Fluid

Not only is the Mercedes-Benz CLS 63 AMG a fast car, it is also a heavy luxury vehicle. This means that Mercedes-Benz has fitted with some rather large brakes pads, rotors to properly slow the vehicle down. The Mercedes-Benz CLS 63 AMG uses 360 mm diameter brakes on all four corners.

Brake pads, rotor and fluid replacement interval wear will vary based on driving conditions and driving style.

The harder someone is on their brakes, the more frequently they must be changed. This is why it is important to inspect the brake wear at each service interval. Brake fluid must be changed every year to ensure that the system isn’t contaminated with moisture, air, or dirt.

Mercedes-Benz CLS 63 AMG Service Guide Brakes

Tires, Suspension & Alignment

The suspension’s job is to not only keep a comfortable ride; it is also to provide optimal handling characteristics. Properly functioning suspension will keep alignment within specification in a straight line as well as in the corners. Moreover, this keeps the tires from wearing unevenly. At each service interval, it is recommended to check the suspension components for any squeaks, rattles, leakage, or play. Alignment can seriously affect both tire wear as well as the handling characteristics of a car. Therefore, it is imperative that the alignment is checked on a regular basis.

Mercedes-Benz CLS 63 AMG Service Guide Coilover Kit

Tires are also wearable items that need to be checked at every service interval. Unfortunately, many owners tend to ignore their tires. As they are the only part of your vehicle that are in contact with the ground, they affect handling, acceleration, braking, and crucially, safety. Wear will vary depending on driving conditions, driving style, and whether or not the vehicle is all-wheel drive or not.

The Mercedes-Benz CLS 63 AMG comes with these OEM tire sizes:



GI Automotive carries a wide selection of road and track Mercedes-Benz tires on stock and available to order. A consultation is available to determine which tire is best for your individual driving needs.

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