Mercedes-Benz S450L Service & Repair Manual 2019–2020

Service and repair manuals for 2 model years of the Mercedes-Benz S450L, 2019 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: 3.0L V6 — 183 cu in, DOHC, turbocharged.

Federal safety record, all years: 4 recalls, 0 owner complaints and 0 technical service bulletins are logged for the S450L. Refreshed 2026-08-21.

01 / Model yearsChoose your S450L year

YearPriceRecallsEnginesTrims
2020 $40.99— 3.0L V6 Biturbo Sedan 4-Door select
2019 $40.994 3.0L V6 Biturbo Sedan 4-Door select

02 / Other yearsOther S450L years

2020 Mercedes-Benz S450L · $40.99 select →

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

No recalls on federal record for the 2020 S450L.

2019 Mercedes-Benz S450L · $40.99 select →

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

  • Electrical System — software: Without the audible tone and blinking warning light to remind the front seat occupants that their se.
  • Seat Belts: If the seat belt tensioning does not activate in the event of a crash, it can increase the risk of i.
  • Lane Departure — lane keep › automatic steering: If the system remains active despite the driver not having their hands on the wheel, the driver's in.
  • Structure — body › roof and pillars: If a side curtain air bag does not deploy as intended, or the pillar covers detach during a crash, t.

03 / OwnershipOwn it — don't rent it

OptionWhat you payAfter a year
eManualStore S450L 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 S450L manual

Which S450L years does this manual cover?

Every year from 2019 to 2020 — 2 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 S450L manual or an aftermarket guide?

The OEM version. It carries the procedures, specifications, torque values and wiring diagrams Mercedes-Benz published for the S450L, organized by system — not a condensed aftermarket summary.

Does it include S450L wiring diagrams?

Yes. Full wiring diagrams are part of every S450L manual, alongside repair procedures, specifications and diagnostic information.

Does the manual cover S450L recalls?

4 recalls are on federal record across the 2019–2020 S450L, 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 S450L years cost more?

Every S450L 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