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Old 02-09-2021, 11:52 AM   #1
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AstraFasta has a spectacular aura aboutAstraFasta has a spectacular aura about
Join Date: May 2015
Posts: 697
Default Secret menu draining battery?

A chap from the UK stated that the hidden or secret menu was causing a parasitic drain on his battery as measured with an ammeter connected in series with the battery.

"to be brief if you have used the hidden menu and you do not either disconnect battery for 10 mins after using it, or cycle ignition on -off twice in quick series then there will be 'something' left on that will flatten your battery."

He also includes voltage measurements in his post as car turns down systems during 2 hours. With OnStar, I'm not sure US Astras ever go to 0v power consumption. And not sure this quirk impacts us.

Access to the secret menu is highlighted here
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