Question about 2007 Mercury Mariner

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Mercury mariner 2007 horn blows none stop how .how do I fix the porblume Also where is horn relay located

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It's inside the SJB - smart junction box ! It's non - serviceable . Is the air bag light lit on the instrument cluster ?Do you know what a smart junction box is ? It's a electronic module with a fuse / relay box built into it .

Module Controlled Functions The smart junction box (SJB) is the multifunction electronic control module on this vehicle. The SJB is a combination of a multifunction control module and a central junction box (CJB). SJB functions control multiple systems, which include:

  • auto locks
  • exterior lamps
  • illuminated entry and interior lamps
  • perimeter anti-theft alarm
  • power door locks
  • rear windshield wiper
  • remote keyless entry (RKE) keypad
  • RKE system
  • tire pressure monitoring system (TPMS)
The SJB is located under the front passenger side floor console. For removal information, refer to Smart Junction Box (SJB) in this section. For additional information on the interior lamps and illuminated entry, refer to Section 417-02 . For additional information on the exterior lighting, refer to Section 417-01 . For additional information on the power door locks, the RKE keypad, and the RKE system, refer to Section 501-14 . For additional information on the rear windshield wiper, refer to Section 501-16 . For additional information on the perimeter anti-theft, refer to Section 419-01A . For additional information on the climate control system, refer to Section 412-00A (Escape, Mariner), or Section 412-00B (Escape Hybrid). For additional information on the warning chimes, refer to Section 413-09 . For additiona information on the TPMS, refer to Section 204-04 .

Posted on Dec 26, 2016


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Posted on Jan 02, 2017


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tried to find the wiring diagram..... it only tells me components on the one i found and it states horns... plural.... look between the radiator and front grill... the horns should be located there. i would suggest that to activate both you might have to hit both switches on the steering wheel at the same time.

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If you can locate and pull relay, do that, if not, pull wires off at horn if you can, otherwise pull fuse. If you have other relays same in area of horn relay (same number on relay) try one of them in that horn spot to see if maybe it's just a stuck relay.If you pull fuse for horn, you may find out something else on same fuse, so make sure you check everything else is working.

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