Tilt (towing) sensor for alarm

Q: Where do I find option code M521 on my car?

Look on the option sticker in the service/maintenance booklet, the front-trunk data label, or the original window sticker (Monroney label in the US).

On the Porsche 911 991.2 (2017-2019), option code M521 means: Tilt (towing) sensor for alarm.

Code: M521 · also 521
Category: Security
Type: M-code
Model: 911 991.2
Years: 2017-2019
Confidence: Medium confidence

01Explained

About M-code codes

M-codes (“Mehrausstattung”) are the classic Porsche factory option numbers printed on the build sheet, window sticker and the option sticker in the service book or front trunk. On a 991.2 you will usually find M521 on the option sticker in the service/maintenance booklet, the front-trunk data label, or the original window sticker (Monroney label in the US).

02Confidence

“medium”: one solid public source; plausible but not double-checked. Option meanings can differ between markets and model years.

M521 on other generations

03Related

More security codes on the 991.2

All 991.2 codes →

Verified against kindel.com. Description is our own wording.

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