Removing and installing ignition key battery: VW Passat CC / CC
Step-by-step removing and installing ignition key battery for the VW Passat CC / CC: 13 steps. What to remove, in what order, and what to check after.
Workshop procedure for VW — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: VW Passat CC (357, 2008–2012), VW CC (358, 2012–2017)
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- Before installing battery, always press any key once.Thus transmitter unit is reset and can recognize a new battery only now.After installing the battery, the keys with remote control must be adapted.
- Engage ignition key upper part in ignition key. Do not damage the gasket.
📋 Procedure
- Pull cover cap (1) forcefully in (direction of arrow) (direction of side button (2)) off ignition key (3).
- Release catches of ignition key upper part (2) on ignition key (1).
- Lever off ignition key upper part from ignition key (arrow) using removal wedge3409(3).
- Lift up battery (3) using a small screwdriver (2).
- Remove battery (3) in (direction of arrow) from mounting (4). [Note: Before installing battery, always press any key once.Thus transmitter unit is reset and can recognize a new battery only now.After installing the battery, the keys with remote control must be adapted.]
- Guide battery (2), with positive part facing upwards and slightly tilted (arrow) in mounting (3) of ignition key (1) (positive terminal is marked in housing).
- Engage battery in ignition key by pressing it in lightly.
- Engage ignition key upper part in ignition key. Do not damage the gasket.
- Then, slide cover cap onto ignition key and insert emergency key in ignition key.
- In the vehicle diagnostics tester, select "“Guided Fault Finding”".
- Press GoTo button and select "“Function/component selection”".
- In the vehicle diagnostics tester, select "“Guided Fault Finding”".
- Press GoTo button and select "“Function/component selection”".
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Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.