Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2012 Volkswagen CC (357) L4-2.0L Turbo (CCTA)FACTORY OEM SERVICE PROCEDURE
Control Unit, Multi-Pin Connector Assignment
Control Unit, Mulit-Pin Connector Assignment
Special tools, testers and auxiliary items required
• Test Box (V.A.G 1598/42)
• Adapter Cable (V.A.G 1598/47)
• Template (V.A.G 1598/47-2)
16-pin connector is not assigned.
5-pin Connector, T5r
1 3rd Blower Speed
2 2nd Blower Speed
3 1st Blower Speed
4 4th Blower Speed
5 Terminal X
20-pin Connector, T20b
3 Fresh/Recirculated Air Door Motor (V154)
6 Fresh/Recirculated Air Door Motor (V154)
8 Rear Window
11 Heated Driver Seat Adjuster (E94) (optional)
15 Heated Front Passenger Seat Adjuster (E95) (optional)
16 Heat/Heat Output Switch (E16)
18 Terminal 30
19 Terminal 15
20 Terminal 31
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.