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Differential Lock Diagram Bulbs

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There are three bulbs in the little diagram in front of the diff lock switch. Two of the bulbs are for illumination when the headlights are on, and the third lights up when the diff lock is activated.
  1. It may be possible to remove the diff lock switch and diagram by prying it up from the top, but rather than risk damage, its safer to get at it from the bottom. The hardest part about removing the console is removing the handbrake covers.
  2. Remove the center console as per Bentley. Briefly, remove the two 8 mm bolts under the rear ashtray and the one behind the little plastic cover in front. Remove the handbrake covers by prying the rubber back from underneath and pulling off the plastic cover. The plastic cover is secured by a metal tab in the handbrake lever. Using a small flat screwdriver, slip under rubber cover and gently pry the plastic tab up and pull the handle cover forward. The console can now be lifted up.
  3. Remove all electrical connectors and lift console out.
  4. Remove the diff lock switch and diagram by pressing the rear tab in and pull up and out.
  5. At your work bench, remove the 4 phillips screws to expose the bulbs. There are 3 bulbs in total, 1 for the diff lock light, and 2 for illumination of the axle diagram. They are soldered to a mini circuit board.
  6. Take the switch back to the car and plug in to determine which bulb is the culprit. The lights and ignition have to be on for the bulbs to work. Check the operation of the diff lock light too.
  7. Remove the bulb with your soldering iron and vacuum bulb. You can replace with a Radio Shack bi-pin 12v 50 mA (272-1154), but some have found that to be too bright and hot. A better option would be a similar 25mA bulb that should also be available at Radio Shack. The diff lock light is hard to get at because it's surrounded by a plastic shroud.
  8. While you've got the console out, there is a small bulb for the cigarette lighter (Osram 1.2 w) and one for the rear ashtray. These simply plug in and are available from a dealer.
  9. Installation is the reverse order.