Accidentally used an old key to start a newly programed system

Asked by Mar 12, 2017 at 01:23 PM

Question type: General

Our 2004 Pontiac Montana was recently
recalibrated and given new keys.  I found my old
key and accidentally tried to start the car.  Now no
keys work.  What can I do to start my van?

1 Answer

241,385

Sometimes waiting 15-20mins you can try to start the car again with the proper key. Put the new key in and turn to the first position and wait for the antitheft to go out, then start the vehicle. If that doesn't work, remove the negative battery cable from the battery for 20mins, and reconnect, then try the procedure above again. It should start. Then throw out the old one.

Your Answer

Add photo

Related Questions

Shortcuts

Search General Questions

General Experts

#1 Tom Demyan
Tom Demyan
Reputation 47,980
#2 COMETGUY61
COMETGUY61
Reputation 39,420
#3 tenspeed
tenspeed
Reputation 16,770
View All

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.