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
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4.7 out of 5 stars

Bree Fealy
Bree Fealy

5 out of 5 stars

posted 1 month ago

I went to Tom's yesterday to get my car diagnosed and it was a great experience. First, they were all booked with appointments but they still said to come by and they would try and get me in. Within 10 minutes, they informed me what the issue could be, looked up the warranty on my car and instructed me on how to talk to the dealership to get the issue fixed. I was impressed by the genuine care and empathy I received and I will definitely go back if I have another issue.

Amrakx Mark
Amrakx Mark

5 out of 5 stars

posted 3 days ago

It is with pleasure that I share my experience with Tom’s Automotive in West Seattle. In expedited response to the service engine light indicator I drove to their reliable and expert shop. They were kind enough to take the time to read the codes and source the issue to low radiator fluid. I had just had BMW Seattle perform an oil service and complete top off of fluids a few days ago, which they obviously failed to do! Obviously I was unable to schedule the oil service with Tom’s due to my schedule. Tom’s Automotive service to the rescue! They are simply the BEST at what they do!

sam brenner
sam brenner

5 out of 5 stars

posted 1 month ago

I had a snag on my latch to open my car hood and John at Toms was very helpful at fixing the problem. He also graciously replaced both of my headlight bulbs while he checked to make sure everything was good to go! Awesome service and will be taking my business to Tom’s from now on.