I HAVE AN OWNERS MANUAL AND IT INFORMS ME OF A TEST LEVER THAT DE ACTIVATES THE 4 MATIC I PULL IT THE LIGHT COMES ON, AND IT DISABLES THE TRANSFER CASE, ALSO SELF LEVELLING FUCTION, ALSO HAD A LIGHT COME ON AFTER REPLACIONG O V P RELAY ( OVER VOLTAGE )
HAD TO REMOVE 4 MATIC CPU when they put it back I guess the connection was not quite correct I removed and replacxe re/re 4 amtic cpu and light went off hope it helps if your still interested
Thursday, December 14th, 2006 AT 7:17 PM