VU Dash Lights

[Wayne Hocking]

Hi all, I have a VU Ute and when driving the dash lights will come on, the same dash lights as when you turn on the ignition. After a couple of seconds they will all go out with the seat belt light staying on a little longer than the others, just like when you start the car.

The fuel gauge resets and slowly climbs back to the correct position.
The tacho continues as normal, but the temp gauge and speedo dip down and recover.
The air con has to be turned back on.
The car keeps running as normal and the cruise continues to work while the lights are on.
The stereo (aftermarket plugged to the original loom via Aerpro) continues to work as normal.

I have read similar posts where faulty ABS gets the blame, the standard VU S Series does not have ABS or traction control.

It seems as if the BCM is resetting.

This has happened four times in the last year, but two of those times were on my way to work this morning.

 

[BlackVXGTS]

The following excerpt is from VT Issues and Faults. Not a good match with your problem but could help:

Electrical malfunctions - VT Commodores use a BCM (Body Control Module). This module is responsible for electrical operation of components inside the vehicle, and is also responsible for the vehicle alarm, and keyless entry systems. The BCM is separate from the PCM (Powertrain Control Module aka Engine Computer). The BCM controls most power systems, such as central locking, electric windows, power antennas, window demisting and cruise control. If this module becomes faulty through a spike voltage, or an accident, any, or all of the above mentioned power systems may become inoperative. Depending on the Vehicle type, a new body control module will come with a new alarm remote. Some types are supplied without an alarm remote, and in this case, a new remote will be needed, and the car will need to be booked in for a tech 2, to reprogram the remote to the body control module.

One area of concern for possible intermittent electrical issues is the wiring harness at the LH rear of the engine compartment. In some VT's this can rub on the body of the theft deterrent horn. The condition has the potential to cause numerous intermittent faults, depending on which wire is damaged.

Some BCM's may suffer from water damage. The retaining bolt in the right side of the Fire wall panel may be insufficiently sealed. If water leaks past this bolt, connector D of the BCM can be affected. The firewall retaining bolt should be checked for tightness, and resealed with a sealer such as silicone RTV 732 (92140051).

 

[Wayne Hocking]

It still gives me a couple of things to check, thanks for that.