Skip the auto shop - Our mechanics make house calls

Symptoms of a Bad or Failing Battery Temperature Sensor

Battery Temperature Sensor

Bad or Failing Battery Temperature Sensor Inspection

by a top-rated mechanic at your home or office

Battery temperature sensors are a feature found on the charging systems of modern vehicles. With the continuously advancing electrical systems found on newer vehicles, batteries are becoming an increasingly important component to modern cars.

As its name suggests, battery temperature sensors detect the temperature of the battery so that the charging system voltage can be increased or decreased according to the vehicle’s needs. When the battery temperature is low, the system voltage is set high and will automatically decrease as the temperature increases. For this reason, when the battery temperature sensor fails, it can cause problems not only for the battery, but the entire electrical system as well. When the battery temperature sensor fails, the vehicle will usually produce a few symptoms that can notify the driver that a problem has occurred and should be serviced.

HAVE SYMPTOMS OF CAR TROUBLE?
Get an $80 diagnostic
by a top-rated mechanic at your home or office.

Get a quote · Book an Appointment · Our expert mechanics come to you.

1. Engine surging

A symptom commonly associated with a failing battery temperature sensor is an engine that surges during operation. The battery temperature sensor helps the system continuously adjust the system voltage, and if it fails, this process may be disturbed. An incorrect or inconsistent signal from the battery temperature sensor may cause the system voltage to fluctuate, which will cause the engine to surge.

2. Low battery voltage

Another symptom of a bad or failing temperature sensor is low battery voltage. If the battery temperature sensor has any issue that causes it to send an incorrect signal to the computer, it can interfere with proper charging and cause low voltage. A battery with low voltage may not be able to properly start a vehicle, and may also cause other problems for the vehicle’s electrical system.

HAVE SYMPTOMS OF CAR TROUBLE?
Get your car fixed at your home or office.

Get a quote · Book an Appointment · Our expert mechanics come to you.

3. Illuminated Battery Light

If the battery temperature sensor fails, it can also cause the Battery Light to become illuminated. If the system is affected in any way that causes the battery to not be charged, and it is picked up by the computer, it will illuminate the Battery Light. The Battery Light may also be illuminated if the sensor detects that it is too hot, to alert the driver to shut off the vehicle before damage occurs to the battery.

While they are not a feature found on all vehicles, battery temperature sensors are becoming more common as the electrical systems of newer vehicles continue to advance, and these sensors can play an important role in a vehicle’s charging system. For this reason, if you suspect that your battery temperature sensor may be having an issue, have the vehicle diagnosed by a professional technician, such as one from YourMechanic. They will be able to determine if the car needs a battery temperature sensor replacement, or if any other repairs are needed to have your symptoms solved.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Still not sure about your car's issue?
Diagnose your car
What kind of issue are you experiencing?
Brakes are squeaking
Car is not starting
Car is overheating
Car is shaking (vibrating)
Fluids are leaking
Heating and A/C
Smoke or steam is coming out of the car
Warning light is on
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How Long Does a Throttle Return Spring Last?
Not all vehicles on the road feature an electronic throttle control (ETC), which is also called drive-by-wire. For vehicles that don't offer this system, they have a throttle cable instead that...
How to Get a Louisiana Driver's Permit
s licensing program. The first step in this program is to obtain...


Related questions

Q: Can a Car Battery Freeze?

A new or nearly new car battery in most of today’s vehicles is fully charged if the voltage is at about 12.6 volts. When a battery starts to age the voltage that it can store will start to be less...

Q: The temperature gauge is low and the engine does not get enough power

The issues you are experiencing can be caused by a few different things. One common cause is an issue with the engine temperature sensor. If the sensor goes bad it may not give the computer an accurate signal, which may...

Q: Car runs hot over short distances

There are a couple possibilities. It could be an instrumentation issue, but that is not that common. The most common issue for your car is head gasket failure. That can cause the problem your having by pumping hot combustion gases...