eTron APA250 Front Drive unit milling / coolant ingress repair operation manual #20260124714213 (Updated 23.3.2026)

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Price for operation manual:
Repair manual price: 1000€ + Tax

This operation manual is a proprietary business secret that outlines the refurbishment process for repair of Drive unit where it start milling and buzzing. By following the provided instruction steps, which include text, images, and videos, you will be fully equipped to repair the Drive unit effectively and efficiently. Manual is non-refundable

Info
You can charge this service: 2400€
You need 30 labor hours to deploy this repair
AUDI OEM CHARGE:
Drive unit: 5500€+tax
Labor 1200€+tax
Author: Matija
Info
Common causes:
  • Therma degraded oil
  • Normal tear&wear
  • Missing oil inside diff 1 speed gearbox
  • Coolant ingress due failed SIC Seal (kaco)
Info
Errors:

Milling and buzzing sound from electric motor

Isolation issue

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Part numbers:

P0B2600,
P0AA600,

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Part numbers:

0EF901141BG

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Tools needed (prepare it) :
  • Workshop lift
  • Allen key 5,6,7,8,9.10
  • Torx 5,6,7,8,9.10
  • Fluke Voltmeter
  • Repair eDrive kit - Replacement parts (Available at our shop)
  • HV Gloves
  • Hydraulic bench table - HV Battery
  • Bearing extractor tool - Gedore
  • Press tool
  • Other mechanic set of tools
  • OIL G 060 190 A2
Info
Repair operation steps
 Step 1:
Before performing any work on the Skoda high-voltage drive unit system, it is mandatory to prepare a controlled and safe working environment in accordance with high-voltage safety protocols. Lvl 3 HV Access license needed.

Read error codes with diagnostic tool and confirm you have same error codes and faults.

Secure the work area – The workspace must be clean, dry, clearly marked as an HV zone, and equipped with proper safety gear (HV gloves, face shield, insulating mat).

Disconnect the 12V system 

Perform safe high-voltage system shutdown – Using approved tools and following OEM procedures, disconnect the HV connectors and wait the required cool-down period for capacitor discharge.

Verify absence of voltage (Zero Voltage Verification) – Use an appropriate HV tester to ensure that no voltage is present in the system before proceeding
 Locate the 12 V battery under the hood

Remove the LV supply by...

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