I changed the battery in my key fob 2012 cadillac cts and it won't work

Asked by GuruCKTB6 Feb 27, 2019 at 10:57 AM about the 2012 Cadillac CTS 3.0L AWD

Question type: Maintenance & Repair

I changed the battery in the key fob because it wouldn't work one day and it
doesn't work.  If I try and re program it says already recognized and if it's
plugging into the car the car will start but when I pull it out it says no key
detected

1 Answer
310

XxBigTeXx answered 5 years ago

Bypass the starter relay and crank while the key is in the on position. This is to force the ecu to communicate. After doing that and making sure the check engine is on you can do the 30 minute key program procedure. Make sure the battery always stays above 12 volts

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

Shortcuts

Search Cadillac CTS Questions

CarGurus Experts

  • #1
    Brandon Foster
    Reputation
    3,270
  • #2
    TransAm77
    Reputation
    2,330
  • #3
    Robert Yelenik
    Reputation
    1,770
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Cadillac CTS-V
1 listings starting at $38,388
Used Cadillac ATS
7 Great Deals out of 108 listings starting at $4,888
Used Cadillac XTS
26 listings starting at $9,995
Used Cadillac CTS Coupe
6 listings starting at $5,995
Used Dodge Charger
39 Great Deals out of 645 listings starting at $4,888
Used Chrysler 300
42 Great Deals out of 516 listings starting at $4,999
Used Chevrolet Camaro
16 Great Deals out of 307 listings starting at $9,995
Used Chevrolet Corvette
28 Great Deals out of 1,058 listings starting at $15,871
Used Cadillac Escalade
21 Great Deals out of 379 listings starting at $6,900
Used Cadillac DTS
12 listings starting at $7,999

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. Content will be removed if CarGurus becomes aware that it violates our policies.