Skip the auto shop - Our mechanics make house calls

Q: If your trying to program a key and your battery is fully charged what else could be wrong

asked by on

I lost my key so I got a new one but it won't program and the battery light came on so I charged the battery and stuck it back in and tried again but the battery light came on again what else could be wrong
My car has an automatic transmission.

A: Hi there. There are a few things that could...

Hi there. There are a few things that could be at fault causing your dilemma. I understand you’ve charged the battery, but what are the current cold cranking amps and state of health? A digital diagnostic battery tester can provide the answer to these questions. The battery is the heart of the electrical system and a fault in the battery will cause or add to your problems. Are you only programming a key or a key and wireless transmitter? I located reference guide to aid you in attempting to program a new key, but this will not work if the vehicle has electrical complications.

It is as follows: Keep the windows open as a safety measure, then, Remove the ignition key from the ignition lock cylinder. Remove the BCM PRGRM fuse from the fuse panel. Refer to Fuse Block in Wiring Systems. Close all of the doors. Close the lift gate. Turn the ignition lock cylinder to ACC. Turn the ignition lock cylinder to OFF, and then back to ACC within 1 second. Open and close any vehicle door. A chime will be heard when the system enters the BCM programming/diagnostic mode. Important After 7 seconds, a chime may be heard confirming successful synchronization. It is necessary to wait approximately 14 seconds for a second chime that will confirm successful programming.

Press and hold the transmitter LOCK and UNLOCK buttons simultaneously for 14 seconds. Repeat the previous step on each additional transmitter to be programmed. Remove the ignition key from the ignition lock cylinder. Install the BCM PRGRM fuse back into the fuse panel. Refer to Fuse Block in Wiring Systems.

Your Mechanic has several available technicians that can assist you with an electrical system inspection, battery replacement, and provide an estimate and direction of repair.

Was this answer helpful?
Recommended services
Get a Quote

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: Turn signals and hazards don't work 2005 Pontiac Grand Am

Hello - the problem you are experiencing is a failure of the turn signal/hazard warning flasher unit. The flasher unit performs the flash function for both your turn signals, and the emergency hazard flasher function. I recommend a turn signal/hazard...

Q: what is the black box with three plugs that is under the dash on the drivers side.

It sounds like you are describing the BCM (Body Control Module). It usually has 3-4 connectors. Saturn vehicles are unique. Like many vehicles, there are not any other vehicles that I know of that you can use for parts....

Q: How do I use the Intelligent Key ignition?

The Intelligent Key system allows you to turn on your vehicle without using your key. As long as the Intelligent Key is on your person (such as in your pocket), you can start your vehicle. To turn on the car,...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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.