Mercedes-Benz SL450 Service & Repair Manual 2017–2020

Service and repair manuals for 4 model years of the Mercedes-Benz SL450, 2017 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 55 technical service bulletins are logged for the SL450. Refreshed 2026-08-21.

01 / Model yearsChoose your SL450 year

YearPriceRecallsEnginesTrims
2020 $40.99— 3.0L V6 Base Convertible 2-Door select
2019 $40.992 3.0L V6 Base Convertible 2-Door details →
2018 $40.991 3.0L V6 Base Convertible 2-Door details →
2017 $40.991 3.0L V6 Base Convertible 2-Door details →

02 / InsideSample pages

From the 2020 SL450 manual.

2020 Mercedes-Benz SL450 service manual page 12020 Mercedes-Benz SL450 service manual page 22020 Mercedes-Benz SL450 service manual page 32020 Mercedes-Benz SL450 service manual page 42020 Mercedes-Benz SL450 service manual page 5

03 / ContentsWhat the manual covers

  • Quick Lookups 188
  • Engine Performance 1,296
  • Accessories & Equipment 2,567
  • General Information 1,657
  • Body & Frame 1,289
  • Heating, Ventilation & A/C (HVAC) 284
  • Brakes 628
  • Restraints 549
  • Collision 364
  • Steering 388
  • Drivelines & Axles 953
  • Suspension 1,013
  • Electrical 2,419
  • Transmission 365
  • Engine Mechanical 2,127
  • Common Specs & Procedures - 231

04 / Other yearsOther SL450 years

2020 Mercedes-Benz SL450 · $40.99 select →

Engines: 3.0L V6 — 183 cu in, DOHC, turbocharged. Trims: Base Convertible 2-Door.

No recalls on federal record for the 2020 SL450.

05 / OwnershipOwn it — don't rent it

OptionWhat you payAfter a year
eManualStore SL450 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 SL450 manual

Which SL450 years does this manual cover?

Every year from 2017 to 2020 — 4 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 SL450 manual or an aftermarket guide?

The OEM version. It carries the procedures, specifications, torque values and wiring diagrams Mercedes-Benz published for the SL450, organized by system — not a condensed aftermarket summary.

Does it include SL450 wiring diagrams?

Yes. Full wiring diagrams are part of every SL450 manual, alongside repair procedures, specifications and diagnostic information.

Does the manual cover SL450 recalls?

4 recalls are on federal record across the 2017–2020 SL450, 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 SL450 years cost more?

Every SL450 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 · 2017