Defroster Not Doing Its Job in Your Vehicle?

Defrosters don’t get a lot of consideration, until they aren’t working well.

The big surprise about defrosters is the system that drives it… the air conditioner.

It is your air conditioner that helps to get the moisture out of the air (and off the windshield). When you turn the defrost on, it’s your air conditioner that kicks in to help get all that moisture out. So, if your air conditioning is not functioning properly, you’re not going to have a good defrost during those dark, cold, early mornings. 

Do I really need to fix my AC in December? 

If you’re noticing that you’ve got a wimpy defrost, yes, please consider it. 

Let’s talk for a second about the rear defrosters

It’s really important that your rear defrosters are working properly… and we are happy to test whether or not they are.

A bigger issue… maple donut smell in your cabin

It may sound nice at first, but if your car’s cabin emits a sweet, maple-donut scent on its own, with no pastry bag or pink box in sight, it could be that your heater core is going bad.

A heater core is for the heating system. When it’s leaking it can potentially leak into the inside of the car. And you don’t want to be in a contained space when there is an antifreeze leak… it’s a poison.

Main takeaways in this post are: 

The defroster removes moisture with the help of your car’s air conditioner

Get your rear defroster checked next time you’re here

Maple-donut smell in the cabin of your car? Bring it in to us at Tom’s.

More posts about heating and cooling systems are here.

Schedule your next service with Tom’s Automotive Service today.

Our Reviews

Tom's Automotive Service
Reviewed from Google

4.6 out of 5 stars

Chris Schnee
Chris Schnee

5 out of 5 stars

posted 1 day ago

Very helpful and friendly, from the mechanics to the office. They are flexible with times and price. My car was having some issues but I could not afford the work on it till the next week. So they allowed me to park my car there until then with no problems. Comfortable feeling environment for sure.

Willie Wood
Willie Wood

5 out of 5 stars

posted 2 weeks ago

We have used this facility several times since our move to Seattle and have been pleased each time. On this visit, we had some minor pre-trip items for them to address, which they did promptly and at no charge. They advised me on some other issues, and we really trust their judgment. Very pleasant people!