Important Notice

48V Alternator Vag 1.5 b Mild Hybrid

DiPa Code:
BATGEN010N
OEM Code:
05E903019F
Brand:
ORIGINALE
Condition:
New
Alternator
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Details

WARNING: RETURN OF THE CASING IS MANDATORY

Applications
VW
VW GOLF VIII Variant (CG5, DB5)
Model Year of Production Displacement KW HP Cylinders Fuel Type Engine Code
GOLF VIII Variant (CG5, DB5) 2024-03-01 - 1498 cc 85 KW 116 HP 4 Cylinders Benzina/Elettrico DXDE
Techinical Info

The code VAG 05E903019F identifies a 48 V belt-driven e-motor/alternator, used in the Volkswagen Group's mild-hybrid systems. The component simultaneously serves as an electric generator and as the starter motor for the internal combustion engine.

Therefore it is not a traditional 12 V alternator: the e-motor/alternator operates on the 48 V mild high-voltage network, with a dedicated lithium-ion battery, the DC/DC converter and the vehicle energy management control units.

It is driven by the accessory belt and is mounted at the front of the engine. It is primarily intended for 1.5 TSI and eTSI petrol engines equipped with mild-hybrid technology.

Technical characteristics

  • High-power electromechanical unit.
  • 48 V mild-hybrid system.
  • Output up to approximately 250 A.
  • Dedicated electronic control for managing generation, energy recuperation and assistance phases for the combustion engine.
  • Driven by a Poly-V (serpentine) belt.

DIPA can intervene to overhaul these components thanks to its experience and expertise.

Functions

  • Starts the combustion engine quickly and quietly during Start&Stop phases.
  • Recovers energy during decelerations and braking to recharge the 48 V mild-hybrid battery.
  • Supports the internal combustion engine during acceleration and pull-away.
  • Enables coasting strategies and temporary shutdown of the combustion engine when provided by the vehicle.
  • Reduces the load on the combustion engine required for electrical power production.
  • Works with the DC/DC converter to power and stabilize the 12 V onboard electrical system.
  • Manages frequent engine restarts in urban driving conditions and traffic.

Model applications

  • Volkswagen Tiguan/Passat
  • Audi A3
  • SEAT Leon KL
  • CUPRA Formentor
  • Škoda Kodiaq II
  • VOLVO S60/S80/V40/V60/V70

Common faults

  • Irregular starts and/or Start&Stop not functioning,
  • Error messages related to the mild-hybrid system
  • Reduced energy recuperation during deceleration.

Final conclusions

The VAG 05E903019F e-motor/alternator is a key component of the 48 V mild-hybrid system and performs starting, electrical generation, energy recovery and assistance functions for the combustion engine.

DIPA offers a wide range of Automotive spare parts: from original equipment to aftermarket parts selected from the best manufacturers on the market. In addition, it has remanufactured components with like-new performance that provide cost savings on replacement and contribute to environmental protection through the circular economy. If the part you need is not available, don't worry: DIPA can overhaul your part “on demand”, restoring full functionality and safety in a short time.