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Stanislaus County, CA Noise from Specific Sources: Car Alarm Limits (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

Key Facts

Auto cutoff required
Within 15 minutes of activation
Enforcement power
Sheriff may disconnect the alarm
Governing section
Stanislaus County Code § 10.46.060(G)
State cross-reference
Cal. Vehicle Code § 22651.5
Applies in
Unincorporated Stanislaus County only

Summary

Stanislaus County requires any vehicle burglar alarm to shut itself off within fifteen minutes of activation. If it doesn't, sheriff's deputies may disconnect it, a rule drawn from the county's noise control chapter and cross-referenced to state Vehicle Code alarm limits.

These county ordinances apply to unincorporated areas of Stanislaus County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

Vehicle Alarms. No owner of a motor vehicle shall have in operation an audible burglar alarm therein unless such burglar alarm shall be capable of terminating its operation within fifteen minutes of the time it is activated. Notwithstanding the requirements of this provision, any member of the sheriff's department of Stanislaus County shall have the right to take such steps as may be reasonable and necessary to disconnect any such alarm installed on a motor vehicle at any time during the period of its activation. (Ref. California Vehicle Code Section 22651.5.)

Full Breakdown

060(G), no owner of a motor vehicle may operate an audible burglar alarm in it unless the alarm is capable of terminating its own operation within fifteen minutes of activation. The provision gives Stanislaus County sheriff's department personnel express authority to take reasonable and necessary steps to disconnect any vehicle alarm that keeps sounding past that window, at any time during its activation, regardless of where the vehicle is parked in the unincorporated area. 5, which governs vehicle alarm enforcement statewide, tying the county's local rule to the state framework rather than creating a wholly separate standard.

060(F) for building burglar alarms, which likewise must cut off within fifteen minutes and must prominently display a callback phone number for the owner. 020: the board of supervisors has found that unnecessary, excessive, and annoying noise is contrary to the public interest, and any noise created in violation of the chapter is deemed a public nuisance. 050. Because the ordinance authorizes disconnection rather than just citation, an alarm that will not stop itself can be physically silenced by law enforcement rather than left to run indefinitely while a citation works through the system.

Violations & Fines

Failing to equip a vehicle alarm with an automatic fifteen-minute cutoff, or allowing one to sound past that limit, is a separate violation under § 10.46.060(G) of Chapter 10.46, in addition to any state Vehicle Code § 22651.5 enforcement. Sheriff's deputies are authorized to disconnect a non-compliant alarm during activation, and the county's general penalty and daily-violation provisions in § 10.46.100 apply to repeated noncompliance.

Frequently Asked Questions

How long can a car alarm legally sound in Stanislaus County?
Under Code § 10.46.060(G), a vehicle burglar alarm must be capable of shutting itself off within fifteen minutes of being triggered. An alarm that keeps sounding past that point is out of compliance with the county's noise control chapter.
Can the sheriff turn off a car alarm that won't stop?
Yes. The ordinance gives any member of the Stanislaus County sheriff's department the right to take reasonable and necessary steps to disconnect an alarm at any time while it is still activated, regardless of the fifteen-minute rule having been exceeded.
Does this apply inside city limits like Modesto or Turlock?
No. Chapter 10.46 is the county's noise control ordinance and by its terms governs the unincorporated area; incorporated cities within Stanislaus County set and enforce their own vehicle alarm and noise rules separately.
Is this the same rule as the building burglar alarm requirement?
No, though it's similar. Section 10.46.060(F) separately requires building burglar alarms to cut off within fifteen minutes and to post a callback number; § 10.46.060(G) is the distinct provision covering alarms installed in motor vehicles.

Sources & Official References

Other rules in Stanislaus County

All Stanislaus County rules

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