Skip the auto shop - Our mechanics make house calls

Q: Car won't start in cold weather

asked by on

My Hyundai Elantra doesn't start when the weather got colder, which means it was starting before. I checked the car battery with a multi-meter and got a voltage reading of 12.6V. I jumped started the car, but also didn't work. I put some gas line antifreeze, in case something is frozen in the gas, but didn't work either. Any ideas of what the problem can be?

Thank you.

My car has 174000 miles.
My car has an automatic transmission.

Hello, thank you for writing in. There are a few more basic things to try before worrying too much. One of the main issues is that occurs in cold weather is that weaker components really struggle. One of the most critical for starting is the fuel pump. A very simple step you can do is to turn the key to the "On" position for around 15-30 seconds before attempting to crank over the engine. This gives the cold and heavily used fuel pump a chance to prime before the engine demands it to work. You may also want to help the engine by using a good oil for winter time. Also for winter time, you should make sure your coolant is in good condition and has a low freeze point. Older coolant can loose these properties. Prime the pump before starting and see if that helps. If it does, you may consider switching out the pump.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
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

Get a quote

What others are asking

Q: Power steering tight

This is normally caused by a faulty rack and pinion. The rack and pinion is what actually causes the wheels to turn left/right when you turn your steering wheel. The rack will develop an internal leak and not return the...

Q: Brake lights not working

Hi! There seems to be an electrical fault in your car having to do with the switch that turns the brake lights on when the brake pedal is depressed. The exterior lighting is on one or several fused circuits, so...

Q: Hard cold starts

Make sure your battery and starter are in good enough condition to turn the engine over at high enough RPM's to start properly in low temperature conditions. Due to the relatively high miles, I would first check and confirm cylinder...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.