I have tested the current drawn by a 2018 Passat keyfob. When dormant, the current is 4.7µAmps, resulting in a theoretical life of a Duracell CR2032 battery of around 5 years. Other tests include the current drawn when:
I've included the maths to enable life calculations for various numbers of button presses per day.
The PDF can be downloaded here. The keyfob section is on page 3.
- buttons are pressed
- for keyless entry, and
- when the keyfob is left inside and becomes deactivated.
I've included the maths to enable life calculations for various numbers of button presses per day.
The PDF can be downloaded here. The keyfob section is on page 3.
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