Trunk key cylinder attachment

5

Asked by Jun 26, 2014 at 09:35 PM about the 2003 Nissan Altima 3.5 SE

Question type: Maintenance & Repair

In my 2003 Altima, their is (was) a sensor (??) attached to the back of the key cylinder.  It has a rectangular hole which
appears to fit over the rectangular peg on the back of the cylinder, visible through the access opening in the trunk lid.  
When I turn the key, this peg rotates and I assume it either opens or closes a switch in the sensor.  See photo.  Can
anyone help me figure out what this sensor is?  The trunk light on the dash still comes on when the trunk is open and
goes off when the trunk is closed.  The key will still open the trunk.  The remote will still open the trunk.  All of the lights,
including the license plate and interior trunk lights work properly, and it wouldn't make any sense to have a lighting sensor
on the key cylinder anyway.

1 Answer

70,215

That is part of anti theft system,it is hooked in to detect,correct key,or wrong key,it doe,s not hurt to leave it unhooked.It just let,you computer know it.s you going in the trunk,or somebody trying to jimmy it with other key.

Your Answer

Nissan Altima Experts

  • #1
    Tom Demyan
    Reputation
    2,220
  • #2
    F_O_R
    Reputation
    760
  • #3
    putolile
    Reputation
    750
View All

Related Models For Sale

Used Nissan Maxima
328 Great Deals out of 21,841 listings starting at $1,200
Used Honda Accord
1,130 Great Deals out of 73,674 listings starting at $1,100
Used Toyota Camry
1,074 Great Deals out of 86,843 listings starting at $800
Used Honda Civic
815 Great Deals out of 60,960 listings starting at $950
Used Nissan Sentra
787 Great Deals out of 51,040 listings starting at $2,100
Used Toyota Corolla
969 Great Deals out of 65,643 listings starting at $1,699
Used Hyundai Sonata
909 Great Deals out of 56,689 listings starting at $1,500
Used Chevrolet Malibu
1,084 Great Deals out of 62,433 listings starting at $880
Used Kia Optima
560 Great Deals out of 32,960 listings starting at $995
Used Chevrolet Impala
580 Great Deals out of 34,490 listings starting at $900
Used Hyundai Elantra
677 Great Deals out of 50,724 listings starting at $1,500

Used Cars For Sale

2017 Nissan Altima For Sale
69 Great Deals out of 21,416 listings starting at $11,900
2016 Nissan Altima For Sale
288 Great Deals out of 9,107 listings starting at $8,990
2015 Nissan Altima For Sale
507 Great Deals out of 10,953 listings starting at $6,595
2014 Nissan Altima For Sale
176 Great Deals out of 4,200 listings starting at $3,900
2013 Nissan Altima For Sale
110 Great Deals out of 3,206 listings starting at $4,500

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.