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Replace battery on a 14 TTS as preventative maintenance?

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991 Turbo Turbo and Turbo S

Replace battery on a 14 TTS as preventative maintenance?

 
Old 10-14-2018, 06:20 PM
  #16  
lowpue
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Originally Posted by worf928 View Post


Two different issues:
1) loss of battery-backed ECU memory: curable with thoughtful use of a tender
2) coding of battery characteristics into (one of the) control unit(s). This requires the PIWIS laptop.

For #2 the speculation is that the amp-hour spec is needed for start/stop. If you use a battery with a different capacity you’re supposed to ‘tell’ the car about this.
Ah...thank you for that clarification....
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