running air with engine off

2008 VOLVO V70

200,000 MILES

AN153026

MEMBER
1 POST

i was running the air in my car with the engine off for like 15 minutes because i was just sitting in a parking lot waiting for someone. the next day my car
wont start and my mechanic said that running the air without the engine on
had drained the entire battery out and the entire electronics needed to be
reprogrammed. i have run the air like this a million times in my car and never
had that problem. seems like bs to me. can anyone confirm?

Jun 16, 2021 at 3:43 PM

JACOBANDNICKOLAS

✓ASE Certified Mechanic
110,194 POSTS

Hi,

I see no reason why anything needs to be reprogrammed. If that was the case, anytime a battery replacement was needed, it would need to be done. That isn't the case.

However, recalibration is required on a few different things. You can do them yourself at home without any tools.

Take a look at the pics below. I included the recalibration information and directions. This is something you can do yourself. The last thing I added was for a sunroof. You may not have one.

Let me know if this helps.

Take care,

Joe

See pics below.

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
Click here to log in and view diagram.

Jun 17, 2021 at 10:31 PM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.