Exception in rendering!

Message: window is not defined

ReferenceError: window is not defined
    at new c (/tmp/execjs20161208-101629-5eg4bcjs:136:3912)
    at m.mountComponent (/tmp/execjs20161208-101629-5eg4bcjs:47:15602)
    at /tmp/execjs20161208-101629-5eg4bcjs:49:31860
    at a.r.perform (/tmp/execjs20161208-101629-5eg4bcjs:47:12503)
    at Object.a [as renderToString] (/tmp/execjs20161208-101629-5eg4bcjs:49:31821)
    at r (/tmp/execjs20161208-101629-5eg4bcjs:50:21164)
    at Object.S.ReactOnRails.serverRenderReactComponent (/tmp/execjs20161208-101629-5eg4bcjs:32:6073)
    at eval (eval at <anonymous> (/tmp/execjs20161208-101629-5eg4bcjs:173:8), <anonymous>:10:23)
    at eval (eval at <anonymous> (/tmp/execjs20161208-101629-5eg4bcjs:173:8), <anonymous>:17:3)
    at /tmp/execjs20161208-101629-5eg4bcjs:173:8

Q: Alternator and battery - 2002 Chevrolet Avalanche

asked by on

My battery light comes on and off when I first start my car, the radio turned off but everything is working again and my volt meter is between 12 and 14. I don't know what's causing this problem. My alternator registers as good and so does my battery.

My car has 171589 miles.
My car has an automatic transmission.

A: Hello. This may be a sign of a failing volt...

Hello. This may be a sign of a failing voltage regulator or potentially a faulty connection somewhere in the charging system causing the light to come on. The voltage regulator is a unit that regulates the charging of the battery by the alternator. Often times, this will result in the alternator allowing too much power to be delivered to the battery resulting in damaging wires and prematurely sometimes destroying the battery. In other cases, it may result in the alternator not supplying enough power to the battery, resulting in undercharging the battery or not charging it at all. If you would like to have this taken care of, I would recommend having a certified professional from YourMechanic come to your car's location to diagnose the battery light and advise on repairs.

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: Decreased engine power

The decreased engine power may be displayed for a variety of reasons, most likely there is a fuel issue or an engine misfire. In either case, the car's computer has put the vehicle into what we call "limp" mode. When...

Q: Some times i turn the key and it starts up like normal but then shuts off after 1 second

You will need to check the purge control valve on the firewall near brake master cylinder. The purge valve may be letting too much vapor into the intake causing the stall or hard start. There also may be an issue...

Q: have to clutch start everytime we want to go somewhere

Hello there, many faults will prevent your 1998 Mitsubishi Mirage from starting normally. You have done well in replacing the battery and starter first as these are the usual causes. Other potential faults are the battery cables, ignition switch, battery...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...