2020 Fiat 500L LoungeFACTORY OEM SERVICE PROCEDURE

Sensor, Knock: Installation

GC0152355Courtesy of CHRYSLER GROUP, LLC
  1. Thoroughly clean the knock sensor mounting hole.
    CAUTION:

    Over or under tightening the knock sensor mounting bolt will affect knock sensor performance, possibly causing improper spark control. Always use the specified torque when installing the knock sensor. Do not apply any adhesive, sealant or thread locking compound to the bolt.

  2. Install the knock sensor (2) with mounting bolt (3). Tighten the mounting bolt to 25 N.m (18 ft. lbs.).
  3. Connect the electrical connector (1).
  4. Install the belly pan. Refer to BELLY PAN, INSTALLATION .
  5. Lower the vehicle.
  6. Connect the negative battery cable and tighten nut to 5 N.m (45 in. lbs.).
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.