The car alarm system in my 1998 Holden Astra hatch activates for no reason, what could be the problem?
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Asked by Howard
The car alarm system in my 1998 Holden Astra hatch activates for no reason, what could be the problem?
Answered by CarsGuide
12 Nov 2021Holden Astras of this vintage have been known to suffer false alarms from the security system, and it seems as though a re-flash or replacement of the ECU (on-board computer) is the ultimate fix. In many other cases, false alarms are the result of faulty switches and sensors, but the Astra’s track record suggests the computer will be the culprit. At which point you have a decision to make which may involve disabling the alarm system altogether (make sure you advise your insurance company if you go down this road).
This model Astra was also infamous for a radio that could turn itself on (independent of the ignition system) and flatten the battery.
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