# 2006 Subaru Impreza - Battery issue

**URL:** <https://community.cartalk.com/t/2006-subaru-impreza-battery-issue/195379>\
**Category:** Maintenance/Repairs\
**Tags:** batteries, subaru\
**Created:** [July 18, 2024, 6:29pm UTC](https://community.cartalk.com/t/2006-subaru-impreza-battery-issue/195379 "2024-07-18T18:29:29Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Duoluo](https://avatars.discourse-cdn.com/v4/letter/d/e19b73/32.png) [@Duoluo](https://community.cartalk.com/u/Duoluo)\
**Post date:** [July 18, 2024, 6:29pm UTC](https://community.cartalk.com/t/2006-subaru-impreza-battery-issue/195379/1 "2024-07-18T18:29:30Z")

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after I changed the old alternator that doesn’t charge, the battery instead of charging discharges; also the ABS light appears on the board and it still doesn’t show the idle speed

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**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\
**Post date:** [July 18, 2024, 10:39pm UTC](https://community.cartalk.com/t/2006-subaru-impreza-battery-issue/195379/2 "2024-07-18T22:39:03Z")

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Ask your shop to do their standard battery alternator test. My diy’er version is: The battery voltage should measure about 12.6 volts before the first start in the AM; then 13-15.5 volts after starting the engine. Suggest to address any battery or alternator faults before considering ABS or idle rpm display involvement.