I replaced the battery on my 2002 Oldsmobile Alero. Now my defroster/heater selection knob doesn't work. The air is

Expert's Assistant chatimg
Customer: I replaced the battery on my 2002 Oldsmobile Alero. Now my defroster/heater selection knob doesn't work. The air is forced out of the front vents no matter what I select with that button. Does something need to be reset after changing the battery? How do I reset this?
Answered by JustAnswer Author in 6 hours 16 years ago
JustAnswer Author
Auto Mechanic

10,000 satisfied customers

Specialities include: Automotive Mechanic, Small Engine Repairs, Auto Body Repairs, Diesel Engine Repairs

I don't believe the battery would affect this. You might need a new heater duct solenoid. There is a tiny electromechanical device that selects which vents the air comes out by using electromagnetism to move a plastic door. The electricity strenthens the magnet causing it to pull a plunger into itself and the plunger is attached to the plastic door.

You might also have a problem with the cable. Some vehicles use the soldenoid to shift airflow and others use a plain metal cable that is attached to the knob on the vent selector. I recommend looking under the dash for wires that may lead to this solenoid to locate it. I would look for a cable coming out of the back of the heater vent selector. You can remove this panel usually with little effort to check and see if it is electronically controlled or mechanically controlled. This is an annoying problem that I have encountered with my vehicle. I just gave it more time to heat up and bought some heet window defroster until I had time to fix it.

Hope this helps,
Read less
10,000 satisfied customers
Auto Mechanic
Auto Mechanic

10,000 satisfied customers



Licensed mechanics

31,131 satisfied customers

Pearl avatar
Steve Pearl, Mechanic's Assistant
14 Mechanics are online right now.
Related Car Questions
2011 Equinox Hvac has defaulted to Defrost mode, control
Car Specialist
26,981 Satisfied Customers
I have a Dodge 2003 1500 Pickup Truck with a 4.7 engine. Turned
Ford tech Specializing in electronics
6,766 Satisfied Customers
i have an 98 olds intrigue. having a problem with the hvac
Lead mech
5,053 Satisfied Customers
My 1998 Olds Intrigue AC is blowing hot air on drivers side
Lead mech
5,053 Satisfied Customers
1999 Oldsmobile Alero: water pump, thermostat and hoses..leak
Automotive Diagnostic Specialist
39,177 Satisfied Customers
How it works
logoAsk for help, 24/7
Ask for help, 24/7
Members enjoy round-the-clock access to 12,000+ verified Experts, including doctors, lawyers, tech support, mechanics, vets, home repair pros, more.
logoExpert will respond in minutes
Expert will respond in minutes
After you reach out, we match you with an Expert who specializes in your situation. Talk, text, chat, whichever you prefer.
logoSave time & money
Save time & money
No scheduling hassles, missing time from work, or expensive consults.
A JustAnswer membership can save you significant time and money each month.
Sarahesq and 87 other Automotive Mechanics are ready to help you.
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.
Last Updated: 12-20-22
Why you’ll love JustAnswer
JustAnswer is the best way to get expertise on-demand from doctors, lawyers, vets, mechanics and more. Since 2003, we’ve helped more than 9 million people in 196 countries and have an A+ rating with BBB and a 9.6/10 rating with TrustPilot.
Highly rated, verified Experts
We pride ourselves in our 8-step verification process including license and credential checks. Vetted by us and rated by customers, like you.
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
Web sites like justanswer.com/legal ...leave nothing to chance.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.

JustAnswerHomeAboutCareersPressPartner ProgramBlogCountries
MembersHow it worksLoginRegisterCategories
ExpertsMeet the ExpertsExpert qualityBecome an Expert
SupportHelp CenterContact Us

© 2003-2023 JustAnswer LLC. All rights reserved.

Privacy PolicyTerms of servicesContact usSitemap
DMCA.com Protection Status