Jaguar XJ (X350). Manual — part 1263

Located above the message center are two lamps, red for warning and amber for caution. When a

message is displayed, the appropriate lamp will illuminate to attract the drivers attention and to

signify the importance of the message.

Trip Computer

Pressing the trip computer cycle switch displays trip data on the message center. Warning and

information messages have priority over trip data. If a driver information message is displayed prior

to activation of the trip computer, the trip data will appear for 10 seconds only, before being

replaced by the original message.

Each successive press of the trip switch causes the computer to continually cycle through the stored

data which is then displayed on the message center.

The trip computer switch pack, mounted on the instrument panel is only enabled while the trip

computer output is displayed. Refer to the Drivers Handbook for full operating instructions.

Message Center switch

The message center switch operates the various functions of the message center.

The message center switch can be used to select trip memory A or B, switch the display between

metric or imperial units or clear (hide) the displayed message.

Pressing the A/B switch and at the same time turning the ignition switch to position II will display the

vehicle identification number. Pressing the ML/km switch and at the same time turning the ignition

switch to position II will change the displayed language. Press the ML/km switch again to toggle the

available languages. Press the A/B switch to select the desired language. Refer to the Drivers

Handbook for full operating instructions.

Oil Change Reminder Indicator - Vehicles with Diesel Particulate Filter
(DPF)

The service required reminder indicator informs the driver that the engine requires an engine oil

change due to excessive build-up of fuel within the engine oil. This is due to the diesel particulate

filter (DPF) regeneration process where additional fuel quantities are added to increase exhaust gas

temperatures. As a result small quantities of unburnt fuel remain in the combustion chamber and

bypass the piston rings into the engine oil.

The amount of excessive fuel is calculated by the powertrain control module (ECM). The ECM

monitors the engine operating conditions and the values from the exhaust gas temperature sensor

during the DPF regeneration process and calculates the amount of fuel in the oil. If the fuel content

exceeds the permitted level, the ECM will illuminate the service required reminder indicator in the

instrument cluster.

After the engine oil has been changed, a service indicator reset procedure must be carried out. For

additional information, refer to Oil Change Reminder Indicator Reset (413-09)

www.

Diagnosis and testing

Information and Message Center

1 . Verify the customer concern.

2 . Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection Chart

Mechanical

Electrical

•

Fluid level(s)

•

Accessory installations

•

Fuse(s)

•

Wiring harness

•

Electrical connector(s)

•

Engine compartment components

•

Underbody components

•

Instrument cluster

•

Door switches

•

Electronic modules

•

Boot/bonnet switch

1 . If an obvious cause for an observed or reported concern is found, correct the cause (if possible)

before proceeding to the next step.

2 . If the cause is not visually evident, verify the symptom and refer to the Jaguar approved diagnostic

system.

Removal and installation

Message Center Switch (86.66.11)

Removal

1 . Remove the coin holder.

Remove the retaining screw.

2 . Detach the message center switch.

3 . Disconnect the message center switch electrical connector.

www.