Climate control not working after disconnecting the battery?

Tiny
DEB61
  • MEMBER
  • 2001 VOLVO V70
  • 191,000 MILES
After disconnecting battery the climate control won’t work fuses checked by auto technician all ok apparently.
Monday, April 21st, 2025 AT 6:45 AM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,144 POSTS
I would do a hard system reboot which should fix the problem, here is a guide to help you:

https://www.2carpros.com/articles/step-by-step-guide-performing-a-hard-system-reboot-for-your-vehicles-electronics-systems

Please go over this guide and get back to us.
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Tuesday, April 22nd, 2025 AT 11:12 AM
Tiny
DEB61
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Ken L

Many thanks for this information have tried all options with no luck all fuses checked but now suspect it can only be the climate control unit that has blown because unit dead no lights etc. Would you think the same?

Thanks again
Debbie
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Saturday, April 26th, 2025 AT 9:30 AM
Tiny
KEN L
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This can happen due to a voltage surge which can occur when the new battery was installed. Here is how to change the unit out, I would check eBay for a replacement part. Check out the images (below). Let us know how it goes.
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Sunday, April 27th, 2025 AT 12:13 PM

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