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Mercedes-Benz SL-Class SL 63 AMG common faults.

2012–2016, convertible, petrol, 537 HP.

The fault list covers: M157DE55AL engine.

What you save stays on this device only. My saves

2 fault write-ups. Both are important. 8 recalls.

If you know the year, pick it. Faults for other years drop out of the list.

Before you buy

Known faults

2 important faults

The cylinder wall is formed by a Silitec liner: a silicon-carbide aluminium surface that is hard and conducts heat well. This material, however, does not cope well with high temperature and occasional detonation, and the cylinder wall becomes scored as a result. The maker finally switched to the Nanoslide coating precisely because of Silitec's cylinder scoring problems.

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On a damaged wall the piston ring does not seal, so oil gets into the combustion chamber: oil consumption rises and compression falls. The wear is reported from 120 000 kilometres, and it is faster the more the engine is run under high load.

The symptom is rising oil consumption and blue smoke under load. The repair involves opening up the engine, because the pistons have to come out to change the rings, and if the wall is already scored, changing the rings alone is not enough.

At a purchase the oil consumption is the measurable sign: ask how much has to be topped up between changes, and ask for a compression or leak-down test.

above 120,000 km

What to check

  • Ask how much oil has to be topped up between changes
  • Watch the exhaust under load: blue smoke means oil burning
  • Ask for a compression or leak-down test: the wear is measurable here
2 more steps in the write-up

At a cold start a rattle comes from the top of the engine, and it is loudest when the car has stood for hours. The cause is the secondary timing chains slapping until the oil pressure builds up in the tensioner system.

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It is not the mileage that marks out the affected cars but the engine number. The maker issued a service document for this in June 2013, and in it the examples with an engine number below 157 9xx 60 022333 are the affected ones; that runs up to production in December 2012. The engines built after that already received the revised parts.

The repair is a revised secondary chain tensioner, and with it a check valve in the oil supply passage: that holds the pressure with the engine stopped, so the tensioner gets oil sooner at start-up. The engine does not have to come out, but the work takes more than a day and costs between 3000 and 4000 pounds. On some cars the maker carried it out under warranty.

According to owners the rattle was not followed by engine damage, and there were cases where it did not get louder in six years. That does not change the fact that the revised part is the right direction, and at a purchase the question is simple: is there an invoice for it.

What to check

  • Start it cold and stand next to the car: the rattle is audible from outside, perhaps not from the driver's seat
  • Ask when it last stood for hours: that is when it is loudest
  • Check the engine number: the examples below 157 9xx 60 022333 are the affected ones
2 more steps in the write-up

Checklist

Mercedes-Benz SL-Class SL 63 AMG

First what you would check on any car. Then the faults of this model.

Before you buy

Checklist

The printed sheet starts with what you would check on any car. What you tick stays on this device only.

On every car

Ask the owner

vinkodex.com · Before you buy it, see what can go wrong.

Official recall8 recallsShow

The manufacturer fixes these for free at a franchised dealer. Ask with the VIN whether it was done.

Most recent: 5 February 2021

21V058000ELECTRICAL SYSTEM:SOFTWAREELECTRICAL SYSTEM:SOFTWARE5 February 2021 · NHTSA (USA)

Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 - 2021 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, GT-Class, C-Class, E-Class, S-Class, CLS-Class, SL-Class, B-Class, GLB-Class, GLC-Class, and G-Class vehicles. Please refer to the Part 573 report for specific vehicle model details. The software design of the communication module may fail to communicate the correct vehicle location for the emergency call system (eCall) in the event of a crash.

Risk: Failure of the eCall system may result in emergency responders being dispatched to the wrong location, increasing the risk of injury following a crash.

Remedy: MBUSA will notify owners, and the communication module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. The recall began March 12, 2021. Owners may contact MBUSA customer service at 1-877-762-8267. MBUSA's number for this recall is 2021020025.

We could not check this: model year. The authority's notice

19V768000POWER TRAIN:AXLE ASSEMBLYPOWER TRAIN:AXLE ASSEMBLY25 October 2019 · NHTSA (USA)

Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2019 SL450, SL63 AMG, and SL550 vehicles. Over time, the bolt connection at the front-left mounting point on the rear axle carrier casting may fail, possibly affecting the vehicle's handling.

Risk: Unexpected changes in the vehicle's handling can increase the risk of a crash.

Remedy: MBUSA will notify owners, and dealers will inspect the front-left mounting point of the rear axle carrier. If a defect in the bolt connection of the rear axle carrier is found, MBUSA will contact the owner and offer a repurchase of the vehicle. The recall began November 22, 2019. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2019100018.

We could not check this: model year. The authority's notice

19V571000AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULEAIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE2 August 2019 · NHTSA (USA)

Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2018 SL65 AMG, 2019 SL63 AMG and 2018-2019 SL450 and SL550 vehicles. The front passenger air bag may have been improperly sewn, allowing the seam to tear during deployment.

Risk: A tear in the air bag may decrease performance and increase the risk of injury.

Remedy: MBUSA will notify owners, and dealers will replace the passenger air bag, free of charge. The recall began December 13, 2019. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2019100016.

We could not check this: model year. The authority's notice

A12/00017/22Safety recallFireno date · EU Safety Gate

A trapped particle may damage the sealing between the fuel rail and fuel injector, which could cause fuel to leak into the engine compartment. Consequently, leaking fuel may come into contact with hot parts of the engine, increasing the risk of fire. The product does not comply with the requirements laid down in the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/00488/20Safety recallEnvironmentno date · EU Safety Gate

Refrigerant of type R134a is used in the air conditioning system. As a result, the affected vehicles do not meet the requirements for type approval. The product does not comply with the requirements of the Type-approval directive.

Remedy: Type of economic operator to whom the measure(s) were ordered: Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/0082/17Safety recallInjuriesno date · EU Safety Gate

The power-assisted steering control units may have been fitted with defectively welded contacts. As a result, a permanent electrical connection between the contacts cannot be guaranteed, which could lead to loss of support to the power-assisted steering and thus an increased risk of accidents.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/01448/22Safety recallEnvironment, Injuriesno date · EU Safety Gate

Faulty configurations of the control units (traction systems, signal recording triggering modules, engine control units and headlights) could cause one or more control units to malfunction, which could increase the risk of an accident. The exhaust emissions exceed the legal limits, posing a risk to the environment. The product does not comply with the Regulation on the approval and market surveillance of motor vehicles and their trailers, and of systems, components and separate technical units intended for such vehicles.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

A12/1466/19Safety recallInjuriesno date · EU Safety Gate

The passenger airbag may not have been sewn together in accordance with the specifications. As a result, the seam at the edges can rip open when it is deployed. This may compromise the airbag's restraining effect in the event of an accident, increasing the risk of an injury.

Remedy: Type of economic operator taking notified measure(s): Manufacturer Category of measure(s): Recall of the product from end users Date of entry into force: Unknown

We could not check this: model year. The authority's notice

Engine and transmission

M157DE55AL

395–430 kW (537–585 HP) · petrol

We built the code from the model and the gear count. The factory sheet does not state it.

Variant data

What is in this version

Factory data

Trim
SL 63 AMG
Body
convertible
Fuel
petrol
Transmission
automatic
Engine size
5461 cc
Power
395 kW (537 HP)
Drive
RWD
Production
2012–2016

Factory service interval

The manufacturer specifies this for this version. Of the mileage and the time, the one that comes first is the one that counts.

  • Air filter

    • 60,000 km or 4 years
  • Cabin (pollen) filter

    • 30,000 km or 2 years
  • Brake fluid change

    • first: 3 years, then 2 years(first change at 3 years, then every two years)
  • Spark plugs, petrol

    • 60,000 km or 6 years

Information, not an expert opinion

We write the descriptions, and we put the source next to them. A person reviews them before they go out. They are still information, not a technical expert opinion.

  • A fault on the list does not mean the car you are looking at has it.
  • A fault missing from the list does not mean the model is fault-free. Write-ups are made model by model. Not all of them are done.
  • You decide whether to buy. This is no substitute for an inspection. That needs a workshop and a history check.
Details in the terms