Thread: What to do if?

To attempt to keep the centre diff locked I would fit a temporary remote switch in the TC module's earth wire so that power to the module can effectively be cut whilst driving slowly in a straight line in rock crawl, hoping to freeze the motor's position whilst the diff is locked. As the TC module forms a link in the high-speed can-bus, other systems including the suspension are likely to fail due to lost comms. If the suspension lowers unacceptably then non-LR solutions are available to keep the suspension up.

Originally Posted by Graeme

To attempt to keep the centre diff locked I would fit a temporary remote switch in the TC module's earth wire so that power to the module can effectively be cut whilst driving slowly in a straight line in rock crawl, hoping to freeze the motor's position whilst the diff is locked. As the TC module forms a link in the high-speed can-bus, other systems including the suspension are likely to fail due to lost comms. If the suspension lowers unacceptably then non-LR solutions are available to keep the suspension up.

So you think that would upset other systems Graeme? If not it sounds feasible to do. If it does then it sounds like all sorts of errors may cascade through the lot including Special Programs off which would also stop you.
Yes LLAMS could keep the suspension up of course.

The TC module has can-in and can-out pairs so taking it off-line is bound to cause an upset. Loss of special programs would seem to be a minor concern if the vehicle would otherwise fail to proceed and no other vehicle is available for recovery.

Do I need to break out the soldering iron?
Could this be done with a software switch using the rotary dial?
I'm taking the D3 across the Simpson in June.

You won't break a CV in the Simpson, trust me I travelled for 6 days cross country without roads over really rough terrain without an issue.

On rock steps on full height with a full boot or at full lock perhaps, but not in the desert.

Originally Posted by Graeme

To attempt to keep the centre diff locked I would fit a temporary remote switch in the TC module's earth wire so that power to the module can effectively be cut whilst driving slowly in a straight line in rock crawl, hoping to freeze the motor's position whilst the diff is locked. As the TC module forms a link in the high-speed can-bus, other systems including the suspension are likely to fail due to lost comms. If the suspension lowers unacceptably then non-LR solutions are available to keep the suspension up.

Given the electronic control of the centre diff, an after market mod to allow manual override would be a neat mod! Even if only for emergency use.