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.

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HOMESERVICE MANUALSVOLKSWAGEN2012JETTA TDI, 4D SEDAN, STANDARD TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 91 (2.0L - IGNITION/GLOW PLUG SYSTEM - ENGINE CODE: CVCA (CONVERTIBLE))28 IGNITION/GLOW PLUG SYSTEMDESCRIPTION AND OPERATIONOVERVIEW - GLOW PLUG SYSTEM

2012 Volkswagen Jetta TDI, 4D Sedan, Standard Trans

Overview - Glow Plug System

2012 Volkswagen Jetta TDI, 4D Sedan, Standard TransSECTION Overview - Glow Plug System

WARNING: This page is about a different car, the 2015 Volkswagen Beetle. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Glow Plug System Overview

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Camshaft Position Sensor -G40-
- Removing and installing, refer to Camshaft Position Sensor - G40- .
Bolt
- 9 Nm
O-Ring
- No replacement part, replace the camshaft position sensor if damaged
Glow Plug
- Glow Plug 1 -Q10-
- Glow Plug 2 -Q11-
- Glow Plug 3 -Q12-
- Glow Plug 4 -Q13-
- If equipped Glow Plug 3 -Q12- with the Cylinder 3 Combustion Chamber Pressure Sensor -G679-
- Glow plug versions, refer to Figure.
- Glow plug without combustion chamber pressure sensor 17 Nm
- Glow plug with combustion chamber pressure sensor 12 Nm
- Removing and installing, refer to GLOW PLUG .
Connector
- For the glow plug
Sealing Flange, Transmission Side
- Removing and installing, refer to SEALING FLANGE, TRANSMISSION SIDE .
Sensor Wheel
- for Engine Speed Sensor -G28-
- Removing and installing, refer to OVERVIEW - CYLINDER BLOCK, TRANSMISSION SIDE .
Engine Speed Sensor -G28-
- Removing and installing, refer to Engine Speed Sensor -G28- .
Bolt
- 4.5 Nm

RENDER: 1.0x

NO RELATED

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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.