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elisaphoenix75

V50 Electrical System Error Sluggish Start

Hi, I'm having a strange issue with my 2005 Volvo V50 diesel (217265 km). I'm getting an electrical system error on the speedometer, and the error memory has stored some faults. The engine is sluggish to start, and I suspect a general electrical malfunction. I've checked the main battery, and it seems fine. However, I'm suspecting the auxiliary battery might not be charging properly. Has anyone experienced similar issues? Any ideas what to check next?

Summary of the thread

A 2005 Volvo V50 diesel is experiencing an electrical system error and sluggish engine start. The main battery appears fine, but there is suspicion that the auxiliary battery may not be charging properly. A similar issue in another vehicle was resolved by replacing the auxiliary battery, suggesting this could be the likely cause. Taking the car to a workshop for diagnosis and potential replacement of the auxiliary battery is recommended.

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4 comment(s)

tildapeters1

Hey, that sounds familiar. I had almost the same problem with my Renault Megane a few years back. It turned out to be a dodgy auxiliary battery. Do you know where it's located in your V50?

elisaphoenix75 (community.author)

Thanks for the quick response! I believe it's located near the main battery, under the hood. Did your Megane exhibit similar symptoms – weak engine start and electrical errors?

tildapeters1

Yep, exactly the same symptoms. Error messages all over the place, and it struggled to start, especially in cold weather. In the end, I took it to a workshop. They confirmed it was the aux battery and replaced it. Saved me a lot of headache trying to diagnose it myself.

elisaphoenix75 (community.author)

Thanks a lot for confirming! Sounds like I'll bite the bullet and take it to a workshop. I was hoping to avoid it, but it seems like the aux battery is the likely culprit. Just got it back, cost me 290€.

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VOLVO

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V50