Q: Heater not heating properly when temperatures below freezing outside

asked by on January 03, 2018

Greetings! My car’s heating system doesn’t heat properly when temperatures outside are below freezing. It only gives a very light warm air but when outside temps are above freezing the heater works just fine. My car is a new 2018 Elantra with just over 2000 miles on it. Also my heated seat and heated steering wheel options are “warm” and not as I expected. I can barely feel the heat after 15-20 minutes of turning them on. Any solutions to both my problems? I never changed my battery and still have the original battery on it. Should I place a stronger/higher voltage battery on it to maybe improve the heat produced from the seat heaters? Plz help as it is very cold this time of year! All the best in 2018!

My car has 2112 miles.
My car has an automatic transmission.

The heated seats and steering will take longer in colder weather to get warm. It is not designed to get too hot. The engine heater relies on the engine getting warmed up since it uses engine cooling system for the heat. You may want to start engine in morning and hold the engine rpms up to 2000 rpms for at least 3 minutes to warm up engine and give additional voltage to seats. This should help to warm interior up before you start to drive.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Brakes went out in car
Hello, since you have a brake fluid leak (https://www.yourmechanic.com/services/brake-fluid-is-leaking-inspection), this needs to be repaired to make the car safe to drive. I would recommend not driving the car until this is fixed. You state that you hear something dragging, this...
Loud knocking noise
First the location of the knocking must be determined. The fix will vary greatly depending on the cause of the noise. Suspension components may have become worn or broken. Brake pads with worn hardware can also make some noise as...
Car shakes and stutters during acceleration - 2001 Toyota Echo
As I was reading this I was thinking spark plugs, but you said there was a couple CENTIMETERS of translucent yellow oil? I can't even imagine what must be happening inside the engine to completely cover spark plugs. I would...
Rough idle and loss of power during acceleration. What could it be?
This may be a sign of a dirty or failing idle air control valve. This is a unit that reads the air intake into the motor as it is mixed with fuel prior to being injected into the motor. The...
Advise on what to use for automatic transmission fluid
Automatic Transmission Fluid (ATF) can be petroleum-based, partially synthetic, or totally synthetic-based oil. All domestic automobile manufacturers require a petroleum-based fluid in their automatic transmissions. Some import manufacturers require the use of a partially synthetic fluid. ATF is a petroleum-based...
Replacement for thermostat repair cost is $608.05. Seems very high.
Hi there. Replacing the thermostat housing on a 2008 Mini Cooper requires removal of multiple components and can take quite some time to complete the job correctly. Add the excessive labor to complete this job to the cost of replacement...
Car cranks but doesn't turn over; battery and starter replaced within last 1-2 months
Hi there. The best option to accurately diagnose why your Nissan is having difficulty starting is to have a professional mobile mechanic complete a car is hard to start inspection (https://www.yourmechanic.com/services/car-is-hard-to-start-inspection). This is what should have been completed prior to...
Can I put a 2007 dodge caravan engine in a 2001 Dodge Caravan
There were 4 different engines used in the 2007 Caravan. Looking at an example, namely the 3.3L (VIN "R") that was used in model year 2007, the head and block casting numbers of that engine do not match the engine...
Windshield Wipers and Lights not working.
Hello, thank you for writing in. The wiper's motor circuit may have a short somewhere that is blowing the fuse. Weather can not only cause corrosion but can stress out the wiper motors and cause them damage as well. Both...

Related articles

The Best Used Cars to Buy For Fuel Economy
Saving money on gas is an important factor to consider when buying a car. The Honda Civic, Toyota Prius, and Ford Fusion all have great fuel economy.
The Best Used Cars to Buy If You're a Construction Worker
If If you're a construction worker, you don’t have to worry about hauling a whole lot of supplies and materials to the site – that’s the boss’s problem. As long as it’s big enough to hold your tools (and most...
10 Best Car Tire Gauges
Maintaining good tire pressure keeps you safe on the road. The Tekton digital tire gauge provides accurate readings with a single press of a button.