How to replace Volkswagen Passat B6/B7 key battery

Video tutorial on How to Change the Remote Key Battery for a B6/B7 VW Passat.

Battery CR3032 Lithium 3V

OEM key used for VW PASSAT B6 and B7 models in 2005-2014

Volkswagen Passat / Magotan B6 2005–2010
Volkswagen Passat / Magotan B7 2010–2014
Volkswagen Passat / Magotan CC 2008–2016
→ Magotan (Passat for the Chinese market)

VAG specifies 3C0959752xx part numbers (3C0959752BA, 3C0959752BD and others).

These keys are with Comfort Access (Keyless/Kessy) and without Comfort Access version.
Keys with Keyless can be recognized by an additional LF-Coil at PCB of the key or by PN.
The list with PN of VW Passat "3C0" keys can find bellow.
Operating frequency: 315MHz or 434MHz (depending of the country).
Keyless LF Wake-up frequency: 21kHz.

Transponder type: Megamos Crypto 48 precoded ("dealer key").

THE LIST OF PASSAT B6 & B7 KEYS:
3C0959752BB / 315MHz / REMOTE
3C0959752BD / 315MHz / REMOTE
3C0959752BE / 315MHz / REMOTE
3C0959752AK / 315MHz / REMOTE
3C0959752AP / 315MHz / REMOTE
3C0959752AQ / 315MHz / REMOTE
3C0959752AH / 315MHz / REMOTE
3C0959752AP / 315MHz / REMOTE
3C0959752M / 434MHz / REMOTE
3C0959752BA / 434MHz / REMOTE
3C0959752AJ / 434MHz / REMOTE
3C0959752BG / 434MHz / WITH KESSY
3C0959752BF / 434MHz / REMOTE
3C0959752AR / 434MHz / REMOTE
3C0959752AL / 434MHz / REMOTE
3C0959752AD / 434MHz / REMOTE

Music by Anton Vlasov "Advertising Saxophone Vibe" from Pixabay

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