2002 Jeep Grand Cherokee OverlandFACTORY OEM SERVICE PROCEDURE

Setting Magnetic Zone Variance

Variance is the difference between magnetic North and geographic North. For proper compass function, the correct variance zone must be set. See Fig 1 . To check or change the variance zone, the ignition switch must be in the On position and the EVIC display must not be blank. Perform the following steps.

  1. If the compass/temperature data is not currently being displayed, momentarily press and release the C/T button to display compass/temp information.
  2. Press and hold the RESET button until VARIANCE = XX is displayed. The EVIC will display the variance zone stored in memory and the word VARIANCE.
  3. Use the STEP button to select the proper variance zone number, 1 through 15.
  4. After selecting the proper zone number, momentarily press and release the RESET button. The variance zone is then stored in the memory and the EVIC returns to normal operation.
Fig 1: Identifying Compass Variance Settings
G00188479Courtesy of DAIMLERCHRYSLER CORPORATION
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.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.