Mercedes-Benz S450 Service & Repair Manual 2008–2020

Service and repair manuals for 7 model years of the Mercedes-Benz S450, 2008 to 2020. Each manual is matched to one exact year — the specifications and procedure sequences are the ones Mercedes-Benz published for that year's engine and trim, not values carried across the whole production run.

Engines across the range: 4.7L V8 — 285 cu in, DOHC · 3.0L V6 — 183 cu in, DOHC, turbocharged.

Federal safety record, all years: 7 recalls, 0 owner complaints and 0 technical service bulletins are logged for the S450. Refreshed 2026-08-21.

01 / Model yearsChoose your S450 year

YearPriceRecallsEnginesTrims
2020 $40.99 3.0L V6 Base Sedan 4-Door · 4Matic Sedan 4-Door select
2019 $40.994 3.0L V6 Base Sedan 4-Door · 4Matic Sedan 4-Door details →
2018 $40.993 3.0L V6 Base Sedan 4-Door · 4Matic Sedan 4-Door details →
2011 $40.99 4.7L V8 4Matic Sedan 4-Door select
2010 $40.99 4.7L V8 4Matic Sedan 4-Door select
2009 $40.99 4.7L V8 4Matic Sedan 4-Door select
2008 $40.99 4.7L V8 4Matic Sedan 4-Door select

02 / InsideSample pages

From the 2020 S450 manual.

2020 Mercedes-Benz S450 service manual page 12020 Mercedes-Benz S450 service manual page 22020 Mercedes-Benz S450 service manual page 32020 Mercedes-Benz S450 service manual page 42020 Mercedes-Benz S450 service manual page 52020 Mercedes-Benz S450 service manual page 6

03 / ContentsWhat the manual covers

  • Quick Lookups 56
  • Engine Performance 1,895
  • Accessories & Equipment 9,216
  • General Information 2,281
  • Body & Frame 2,122
  • Heating, Ventilation & A/C (HVAC) 544
  • Brakes 784
  • Hybrid/Electric Powertrain 443
  • Collision 506
  • Restraints 1,396
  • Drivelines & Axles 479
  • Steering 558
  • Electrical 4,561
  • Suspension 949
  • Engine Mechanical 2,010
  • Transmission 689
  • Common Specs & Procedures - 222

04 / Other yearsOther S450 years

2020 Mercedes-Benz S450 · $40.99 select →

Engines: 3.0L V6 — 183 cu in, DOHC, turbocharged. Trims: Base Sedan 4-Door · 4Matic Sedan 4-Door.

No recalls on federal record for the 2020 S450.

2011 Mercedes-Benz S450 · $40.99 select →

Engines: 4.7L V8 — 285 cu in, DOHC. Trims: 4Matic Sedan 4-Door.

No recalls on federal record for the 2011 S450.

2010 Mercedes-Benz S450 · $40.99 select →

Engines: 4.7L V8 — 285 cu in, DOHC. Trims: 4Matic Sedan 4-Door.

No recalls on federal record for the 2010 S450.

2009 Mercedes-Benz S450 · $40.99 select →

Engines: 4.7L V8 — 285 cu in, DOHC. Trims: 4Matic Sedan 4-Door.

No recalls on federal record for the 2009 S450.

2008 Mercedes-Benz S450 · $40.99 select →

Engines: 4.7L V8 — 285 cu in, DOHC. Trims: 4Matic Sedan 4-Door.

No recalls on federal record for the 2008 S450.

05 / OwnershipOwn it — don't rent it

OptionWhat you payAfter a year
eManualStore S450 manual$40.99 onceStill yours
Per-vehicle online subscriptionfrom $29 / year, renewingPay again or lose access
Library membership services$33 / month, capped$396 spent, nothing kept
Professional shop databases$499–$2,388 / yearRenew or lose access

Competitor figures as published on their sites, August 2026.

FAQQuestions about the S450 manual

Which S450 years does this manual cover?

Every year from 2008 to 2020 — 7 separate manuals, one per model year. Pick your year in the selector; the manual you receive is matched to that exact year, engine and trim.

Is this the OEM Mercedes-Benz S450 manual or an aftermarket guide?

The OEM version. It carries the procedures, specifications, torque values and wiring diagrams Mercedes-Benz published for the S450, organized by system — not a condensed aftermarket summary.

Does it include S450 wiring diagrams?

Yes. Full wiring diagrams are part of every S450 manual, alongside repair procedures, specifications and diagnostic information.

Does the manual cover S450 recalls?

7 recalls are on federal record across the 2008–2020 S450, listed by year below. The manual carries the manufacturer's diagnostic and repair procedures behind the systems involved; the recall repairs themselves are performed free by Mercedes-Benz dealers.

Why do some S450 years cost more?

Every S450 year is $40.99.

Is this a subscription?

No. One payment, and the manual is yours to keep — unlike per-vehicle subscriptions that renew every year.

How do I get the manual after purchase?

It is a digital manual — nothing ships. Access details arrive by email right after checkout, and you can use it on any device.

RelatedSame-era Mercedes-Benz manuals

By year: 2020 · 2019 · 2018 · 2011 · 2010 · 2009 · 2008