Skip the auto shop - Our mechanics make house calls

Q: Warning lights are on and battery is low

asked by on

While I was driving on the the hwy in cruise control, the following lights came on: Check engine light is on, master warning light, VSC light, hybrid system warning light. Cruise stopped working. Was able to drive home. Now battery has only two bars on it. Master warning, check engine and hybrid light are still on and batter is down to two bars.

My car has 146000 miles.
My car has an automatic transmission.

A: It sounds like you very possibly have a fai...

It sounds like you very possibly have a failing HV (high voltage) battery, also known as the main hybrid battery. You may be lucky and be just under the limits for the battery warranty, as they were extended to 150,000 miles and 10 years from original vehicle in service date. You should have the warning light diagnosis verified first by a qualified technician, such as one from YourMechanic. This ensures that you go to the dealer with the knowledge you need to make sure your battery is replaced under warranty.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: What is a Eco oxygen sender and does it need replaced and cost

Hello. From your description it sounds to me like you are referring to the vehicle's oxygen sensor. Your vehicle is equipped with multiple oxygen sensors that are responsible for detecting the vehicle's air-fuel ratio. The sensors send the air-fuel ratio...

Q: Loud idling, clunking, vibrating when stopping, sluggish engine

It sounds like you may have a faulty engine or transmission mount. These mounts are what secures the engine or transmission to the frame of the vehicle. These mounts are made of metal frames with large solid pieces of rubber...

Q: Can I drive my car even the brake and abs light on or not?

Hi, thanks for writing in. It is not recommended to drive the vehicle until you have the brake system diagnosed to find out the problem. If the ABS has a bad sensor then this disables the ABS system but the...

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...
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...
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.