This comprehensive 100-page PDF file contains the official VAG Self-Study Program 649 (SSP 649), focused entirely on the groundbreaking design and function of the Audi Q7 e-tron quattro (type 4M). Representing Audi’s second major plug-in hybrid model (PHEV), the Q7 e-tron was an engineering marvel, achieving the title of the world’s first plug-in hybrid to combine a powerful 6-cylinder diesel engine (3.0L V6 TDI) with full-time mechanical quattro all-wheel drive. Capable of driving up to 56 km on purely electric power and boasting a combined range of 1410 km, this complex vehicle requires a deep understanding of how its conventional and high-voltage systems interact. This technical training manual is an absolute must-have for VAG high-voltage technicians, diagnostic specialists, and Audi enthusiasts.
Please note: As a Self-Study Program, this document focuses heavily on engineering design, system integration, and operational theory. It is not a step-by-step repair manual, but the theoretical knowledge it provides is crucial for safely diagnosing or servicing high-voltage components on the 4M platform. Furthermore, deep details on the high-voltage electrical network are covered in the companion manual, SSP 650.
This detailed technical training manual covers the following key engineering topics:
- Vehicle Concept and Packaging: A deep dive into how Audi engineers packaged a massive high-voltage battery and electric motor into the Q7’s MLB Evo chassis without compromising the mechanical quattro drivetrain.
- Powertrain Integration: Essential reading for understanding hybrid operation. It meticulously explains the interaction between the 3.0L V6 TDI engine (or the 2.0L TFSI used in specific markets) and the disk-shaped electric motor integrated directly into the modified 8-speed tiptronic transmission. It details the separating clutch that allows the diesel engine to decouple for pure electric driving or “coasting”.
- High-Voltage Battery and Charging: A complete breakdown of the liquid-cooled, 17.3 kWh lithium-ion battery system. It details the internal cell modules, the Battery Regulation Unit, and the onboard charging system that handles AC charging.
- Complex Thermal Management: Managing heat in a PHEV is incredibly complex. The manual thoroughly maps out the integrated cooling/heating system that manages the diesel engine, the power electronics, the high-voltage battery, and the cabin climate control, utilizing a highly efficient heat pump system to maximize electric range.
- Hybrid Operating Modes: An overview of the electronic “brain” controlling the driving experience. It explains the predictive hybrid strategy, which uses navigation data to optimize battery usage along a route, and the active accelerator pedal that provides haptic feedback to the driver to prevent the combustion engine from starting unnecessarily.
Whether you are trying to map the flow of the complex heat pump system, diagnosing a fault in the hybrid separating clutch, or simply want to appreciate the incredible engineering behind this luxury PHEV, SSP 649 is the definitive technical resource.
CONTENTS
- Introduction
- Vehicle distinguishing features
- Dimensions
- Passive safety
- Overview
- Components
- System overview
- Airbag control unit J234
- Internal combustion engines
- 3.0l V6 TDI engine Gen.2 evo (EA897)
- Third-generation 2.0l R4 TFSI engine (EA888)
- Technical features
- Power transmission
- Overview
- Selector mechanism
- Emergency release, parking lock
- Plug-in hybrid drive
- Hybrid module (separation clutch actuator, sensors)
- 8-speed automatic gearbox 0D7 (cutaway view, ATF and MTF systems, ATF supply)
- Gearbox schematic, gear set, shift elements
- Shift matrix, operating modes, mechatronic module
- ATF cooling
- Function diagram, information and data exchange
- Functions influencing gearbox control (Audi drive select, e-tron modes)
- Combinations of selector positions and e-tron modes within the Audi drive select modes
- Service
- Chassis
- Overall concept
- Brake system
- Electro-mechanical brake servo
- Brake system pressure accumulator VX70
- Wheels and tyres
- Air conditioning and cooling
- Thermal management and heat pump
- Coolant circuits
- Operating states of the heat pump
- Air conditioning the vehicle interior
- System overview
- Infotainment
- Overview
- Service
- Inspection and maintenance
- Appendix
- Self study programmes
Language: English
Format: PDF
Pages: 100
Self Study Program 649 – Audi Q7 e-tron quattro (type 4M) PDF free online
