RL V6-3.5L (2007)
Relay Box: Service and Repair
Driver's Under-Dash Fuse/Relay Box (MICU)
Driver's Under-dash Fuse/Relay Box (MICU) Removal/Installation
SRS components are located in this area. Review the SRS component locations and precautions and procedures before performing repairs or servicing.
Removal
1. Make sure you have the anti-theft codes for the audio and the navigation system. If equipped with XM radio, write down the XM radio presets.
2. Make sure the ignition switch is OFF.
3. Disconnect the negative battery cable, then disconnect the positive cable, and wait at least 3 minutes.
4. Remove the left front door sill trim and left kick panel.
5. Disconnect the connectors from the fuse side of the driver's under-dash fuse/relay box (A).
6. Remove the mounting bolt and pull the driver's under-dash fuse/relay box away from the body.
7. Disconnect the connectors and remove the driver's under-dash fuse/relay box.
8. Carefully remove the relays by prying under the base of the relay.
NOTE: Do not use pliers. Pliers will damage the relays, which could cause the engine to stall or not start.
Installation
NOTE: The MICU which is part of the driver's under-dash fuse/relay box is a component of the immobilizer system. Because of this construction, the
MICU must be registered when the driver's under-dash fuse/relay box is replaced, or the vehicle will not start.
1. Install the relays and connect the connectors to the driver's under-dash fuse/relay box, then install the driver's under-dash fuse/relay box in the
reverse order of removal.
2. Install the removed parts in the reverse order of removal.
3. Connect the positive cable to battery, then connect the negative cable to the battery.
4. If the driver's under-dash fuse/relay box is replaced, go to step 10.
5. If the original driver's under-dash fuse/relay box is installed, go to step 10.
5. Connect the HDS to the data link connector.
6. Turn the ignition switch ON (II).
7. Select the BODY ELECTRICAL, then enter the IMMOBILIZER SETUP.
8. Select the REPLACE MPCS/MICU/IMOES, then select the suitable menu from the HDS indications.
9. After registration, confirm that the vehicle will start.
10. Enter the audio and navigation system anti-theft codes, and set the clock. If the XM radio is equipped, enter the XM radio presets.
11. Confirm that all systems work properly.
