The service and repair manual for the 2018 Mercedes-Benz GLS450 — the 3.0L V6 engine, 1 trim. Matched to this exact model year, so the specifications and sequences are the ones Mercedes-Benz published for your car, not figures carried over from a neighbouring year.
01 / FitmentWhat this manual covers
| Model year | 2018 |
|---|---|
| Engines | 3.0L V6 — 183 cu in, DOHC, turbocharged |
| Trims | 4Matic Sport Utility 4-Door |
| Federal record | 1 recall · 0 complaints · 0 technical service bulletins (refreshed 2026-08-21) |
02 / InsideSample pages from the 2018 GLS450 manual
03 / ContentsSections in the manual
- Quick Lookups 264
- Engine Performance 2,503
- Accessories & Equipment 8,491
- General Information 2,579
- Body & Frame 2,117
- Heating, Ventilation & A/C (HVAC) 366
- Brakes 843
- Maintenance 91
- Collision 320
- Restraints 1,272
- Drivelines & Axles 576
- Steering 570
- Electrical 4,758
- Suspension 974
- Engine Mechanical 2,408
- Transmission 896
- Common Specs & Procedures - 166
04 / Known issuesRecalls on federal record for the 2018 GLS450
- Service Brakes, Hydraulic · 18V539000Reduced braking performance can increase the risk of a crash.
Owners have filed 0 complaints and Mercedes-Benz has issued 0 technical service bulletins for the 2018 GLS450. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.
FAQQuestions about the 2018 GLS450 manual
Is this manual specific to the 2018 GLS450?
Yes. It is the OEM manual matched to the 2018 model year, covering the 3.0L V6 across the 4Matic Sport Utility 4-Door trims. Specifications and procedure sequences are the ones Mercedes-Benz published for this year.
What 2018 GLS450 problems does it help with?
1 recall is on federal record for the 2018 GLS450, covering service brakes, hydraulic. The manual carries the manufacturer's diagnostic and repair procedures for those systems; the recall repairs themselves are done free by Mercedes-Benz dealers.
Does it include 2018 GLS450 wiring diagrams?
Yes — the complete wiring diagrams for the 2018 build, alongside repair procedures, specifications and diagnostics.
Is it a subscription?
No. $40.99 once and the manual is yours. It is a digital manual — nothing ships; access details arrive by email after checkout and it works on any device.
RelatedOther GLS450 years and 2018 Mercedes-Benz models
2020 GLS450 · 2019 GLS450 · 2017 GLS450 · all 4 years
2018 Mercedes-Benz A200 · 2018 Mercedes-Benz A250 · 2018 Mercedes-Benz A45 AMG · 2018 Mercedes-Benz AMG GT · 2018 Mercedes-Benz AMG GT C · 2018 Mercedes-Benz AMG GT R · 2018 Mercedes-Benz AMG GT S · 2018 Mercedes-Benz Alliado · 2018 Mercedes-Benz B250 · 2018 Mercedes-Benz Boxer 40 · 2018 Mercedes-Benz Boxer 50 · 2018 Mercedes-Benz Boxer 60 · every 2018 model