Mercedes GLS Class Workshop Manuals

Mercedes GLS Class Workshop Manuals

Mercedes GLS Class Workshop Manuals & Wiring Diagrams. Instant Download

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Download professional Mercedes GLS-Class workshop manuals covering both generations of the full-size seven-seat SUV — the X166 and the X167. The GLS is the successor to the Mercedes GL-Class. Our GLS service manuals deliver factory-level repair procedures, maintenance schedules, wiring diagrams, torque specifications and diagnostic trouble codes — covering petrol, diesel, AMG and Maybach variants from the GLS350d right up to the GLS63 AMG.

What's Included:

✓ Repair procedures    ✓ Wiring diagrams    ✓ Service schedules    ✓ Technical specs    ✓ Diagnostic codes    ✓ Instant download

Most Popular Mercedes GLS-Class Workshop Manuals

Mercedes GLS-Class Workshop Manual FAQs

What's included in a Mercedes GLS workshop manual?

Each GLS workshop manual includes step-by-step repair procedures, maintenance schedules, torque specifications and diagnostic trouble codes — the same factory-level information used in professional workshops. Most also include full wiring diagrams (see the product page for exact contents).

Which GLS generations (chassis codes) do you cover, and is it the same as the GL?

We cover both GLS generations: the X166 (2015–2019) and the X167 (2019–2023). The GLS is the renamed successor to the GL-Class — the X166 was sold as the GL before the 2015 rebrand — so for earlier models see our GL-Class manuals. The chassis code is listed on each product page.

Which GLS models and variants do you cover?

Our range spans the full line-up — the GLS350d, GLS400, GLS400d, GLS450 and GLS580, in petrol and CDI diesel forms, the 4Matic all-wheel-drive models, the AMG GLS63, and the Maybach GLS600. The exact variant is listed on each product page.

Do the manuals include GLS wiring diagrams?

Most of our GLS repair manuals include complete wiring diagrams — covering the electrical system, ECU pinouts, sensor locations and component layouts for accurate electrical diagnosis. Coverage can vary by model and year, so always check the individual product page for the exact contents of each manual.

What formats are available and how are they delivered?

Most GLS manuals are supplied as instant-download PDF, with selected titles provided as HTML-based manuals. The format of each title is clearly indicated on the product image and within the product description, so you can confirm exactly what you'll receive before purchasing. All formats are delivered instantly after checkout, with lifetime access on any device.

Which GLS engines are covered?

Our GLS manuals span petrol and diesel powertrains. Petrol coverage includes the M276 V6, the M256 straight-six with EQ Boost (GLS450), and the 4.0L M176 biturbo V8 (GLS580 and Maybach GLS600); the AMG GLS63 uses the M177 V8. Diesel coverage includes the OM642 V6 and the OM656 straight-six (GLS350d/400d). The exact engine is listed on each product page.

Do you cover petrol, diesel and AMG GLS models?

Yes — petrol (including the EQ Boost mild-hybrid sixes), CDI diesel, the AMG GLS63 and the Maybach GLS600 are all covered. If you can't find the exact GLS variant or year you need — including the all-electric EQS SUV — please contact us and we'll do our best to source it for you.

Part of our full Mercedes-Benz workshop manual range. Related classes: GL · GLE · G-Class · GLC.