
Mercedes 420SE, 420SEL, 420SEC Workshop Service Repair Manual
The Mercedes 420SE, 420SEL, 420SEC Workshop Service Repair Manual is an essential resource for maintaining, servicing, and repairing your vehicle. This comprehensive manual includes detailed illustrations, wiring diagrams, and step-by-step instructions, ensuring you have all the information you need to keep your car in top condition.
– Years Covered: 1986, 1987, 1988, 1989, 1990, 1991
– Languages Available: English
– Compatibility: Windows — see included guide for supported versions
– Instant Download
£9.99
Choose Currency
-
Pound sterling (£) - GBP
-
United States dollar ($) - USD
-
Euro (€) - EUR
-
Australian dollar ($) - AUD
-
Brazilian real (R$) - BRL
-
Chinese yuan (¥) - CNY
-
Canadian dollar ($) - CAD
-
Danish krone (kr.) - DKK
-
Hong Kong dollar ($) - HKD
-
Indian rupee (₹) - INR
-
Mexican peso ($) - MXN
-
New Taiwan dollar (NT$) - TWD
-
New Zealand dollar ($) - NZD
-
Norwegian krone (kr) - NOK
-
Polish złoty (zł) - PLN
-
Singapore dollar ($) - SGD
-
South African rand (R) - ZAR
-
South Korean won (₩) - KRW
-
Swedish krona (kr) - SEK
-
Swiss franc (CHF) - CHF
-
Thai baht (฿) - THB
-
Turkish lira (₺) - TRY
-
Ukrainian hryvnia (₴) - UAH
Mercedes 420SE, 420SEL, 420SEC Workshop and Service Manual
Overview:
Unlock the full potential of your Mercedes 420SE, 420SEL, 420SEC with the official workshop and service manual, trusted by Mercedes dealer garages worldwide.
Key Features:
– Years Covered: 1986, 1987, 1988, 1989, 1990, 1991
– Languages Available: English
– Compatibility: Windows — see included guide for supported versions
– Instant Download
Prefer a PDF? If you want something that works on a phone or tablet and is much simpler to use, our Mercedes S Class W126 service manual PDF for 1983-1993 is a single searchable PDF that needs no installation. It includes the 420SEL with the 4.2 litre M116 V8.
Description:
The Mercedes 420SE, 420SEL, 420SEC Workshop Service Repair Manual is an essential resource for maintaining, servicing, and repairing your vehicle. This comprehensive manual includes detailed illustrations, wiring diagrams, and step-by-step instructions, ensuring you have all the information you need to keep your car in top condition.
Covers Models:
420SE, 420SEL, 420SEC
Engine:
All engine variants.
Transmission:
All Transmission Variants
Years:
1986-1991
Drive Options:
Left and right hand drive
Contents:
– General Information: Diagnosis, troubleshooting, and specifications.
– Engine Control: Comprehensive engine management details.
– Fuel & Exhaust Systems: Maintenance and repair procedures.
– Emission Control: Guidelines for emission control systems.
– Lubrication & Mechanical Systems: Complete engine lubrication and mechanical maintenance.
– Transmission: Detailed transmission service and repair.
– Brake System: Instructions for maintaining and repairing brakes.
– Axles: Front and rear axle maintenance.
– Steering System: Detailed steering system repair and maintenance.
– Heater & Air Conditioning: HVAC system diagnostics and repair.
– Ventilation System: Ventilation system service procedures.
– Maintenance: Scheduled service information and maintenance operations.
– Lights & Switches: Electrical lighting and switch maintenance.
– Clutch & Gearbox: Comprehensive clutch and gearbox maintenance.
– Propeller Shaft & Differential: Detailed repair procedures.
– Cooling System: Cooling system diagnostics and repair.
– Electrical System: Extensive electrical system diagrams and repair instructions.
– Technical Diagnostics: Fault finding and diagnostics.
– Suspension: Suspension system service and repair.
– Wheels & Tyres: Wheel and tyre maintenance.
– Body & Chassis: Detailed body and chassis repair.
– Interior Fittings: Interior maintenance and repair.
– Safety Systems: Comprehensive safety system diagnostics and repair.
– And Much More…
Special Features:
– Comprehensive Diagrams
– Zoom-In Illustrations
– Torque Specifications
– Special Tooling Requirements
– Menu-Driven Pages
– Thousands of Photographs and Diagrams
– Search Functionality by Model, Year, Sales Model, Engine Code, Gearbox Code
Download Now:
Get instant access to your Mercedes 420SE, 420SEL, 420SEC Workshop Repair Manual. Enhance your repair and maintenance capabilities with this indispensable guide. Download now to ensure your vehicle runs smoothly and efficiently.
Frequently Asked Questions
What Mercedes models are covered?
This comprehensive workshop manual covers the Mercedes-Benz 420SE, 420SEL, and 420SEC models from the W126 chassis series. The 420SE represents the standard wheelbase sedan, while the 420SEL features the extended long-wheelbase configuration for enhanced rear passenger comfort. The 420SEC is the elegant two-door coupe variant built on the C126 platform. These luxury vehicles were produced during the 1980s and early 1990s, representing Mercedes-Benz’s flagship S-Class lineup. All body styles, trim levels, and regional variants are fully covered within this service manual.
What engines/transmissions are covered?
This manual provides complete coverage for the Mercedes-Benz M116.965 4.2-liter V8 engine found in all 420 series models. This naturally aspirated powerplant produces approximately 218-224 horsepower depending on market specifications. Full service procedures include valve adjustments, timing chain replacement, fuel injection system diagnostics, and complete engine overhaul instructions. Transmission coverage includes the 4-speed automatic transmission with detailed procedures for fluid changes, adjustment specifications, valve body servicing, and complete rebuild instructions. Both mechanical and electronic components are thoroughly documented.
Does this include wiring diagrams?
Yes, this workshop manual includes comprehensive electrical system documentation for your Mercedes 420SE, 420SEL, and 420SEC. You will find complete wiring diagrams covering the engine management system, climate control, power windows, central locking, instrument cluster, lighting circuits, and audio systems. Component locations, connector pinouts, and ground point locations are clearly illustrated. Troubleshooting procedures guide you through diagnosing electrical faults using proper testing methods. The electrical section also covers the ABS system, cruise control, and seat memory functions found on these luxury vehicles.
What format is this Workshop Manual provided in?
This is professional OEM Mercedes dealer software, the same diagnostic and repair system used by authorized Mercedes-Benz dealerships worldwide. Unlike static documents, this interactive software features searchable databases, component locators, step-by-step guided diagnostics, and dynamic wiring diagram navigation. The software provides dealer-level functionality including parts cross-referencing, labour time estimates, and technical service bulletin integration. This professional-grade tool delivers an experience far superior to traditional workshop manuals.
Related products
-

Mercedes 300SD 1977-1980 Workshop Service Repair Manual PDF
£14.99 View product -

Mercedes 230E, 230CE, 230TE Workshop Service Repair Manual
£9.99 View product -

Mercedes W124 Workshop Service Repair Manual
£9.99 View product -

Mercedes 560SE, 560SEL, 560SEC Workshop Service Repair Manual
£9.99 View product