mila_blaze1
XC70 Undervoltage Warnings
Summary of the thread
A 2015 Volvo XC70 was experiencing undervoltage warnings, poor starting, temporary system failures, and flickering lights, suggesting a potential electrical issue. Initial checks showed no visible corrosion on battery terminals. The problem was identified as a heavily discharged and defective battery, which was replaced, resolving the issues.
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4 comment(s)
mila_blaze1 (community.author)
When you say charging system, what exactly did you check? Was it just the battery voltage or something else?
norbertkeller42
In my case it ended up being a heavily discharged battery. I'd suggest getting the battery properly tested. If it's not that, you might need to take it to a workshop to check for other electrical issues. I went through a lot of head-scratching before figuring it out!
mila_blaze1 (community.author)
I had the battery tested, and you were right – it was heavily discharged and defective. Replaced it for 290€ and everything seems to be working perfectly now.
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VOLVO
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XC70
norbertkeller42
It sounds like it could be a voltage drop somewhere. Have you checked the charging system at all? Or maybe the power supply?