sophiaraven10
350Z Idle Stop Failure
Summary of the thread
The 2009 Nissan 350Z was experiencing idle stop failure, with the engine shutting off and a warning light on. The issue was suspected to be related to a heavily discharged or dead battery. After checking and replacing the battery, the problem was resolved, confirming the battery was the cause.
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4 comment(s)
sophiaraven10 (community.author)
Load tested? Never done that before, sounds technical. What does that show?
richardweber66
Think of it like this: voltage is how full the glass is, a load test is how fast you can chug the juice. It shows if the battery can actually deliver power under load. If it's failing, your start-stop will complain first. With those errors and the engine cutting out, I'd take it to a workshop.
sophiaraven10 (community.author)
I suspected it was the battery. Just got it checked, and you were right – the battery was toast. New one fitted, cost 290€, and now it's purring again!
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NISSAN
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350Z
richardweber66
Sounds familiar! I had a similar issue with my old Peugeot 208. The start-stop system went bonkers with the same symptoms. Did you check the battery voltage? Maybe get it load tested?