Much of the time the sat nav works fine, However every so often it will lock up, and then reboot.

Just recently it has started to do this multiple times until the unit is frozen out completely and a default alternative display comes up, I can still access all the other functions through the screen once this alternative display comes up.

A period with the car stopped will always cure this.

Is this a known failure mode? Is there a known fix?

Many thanks

MW Car history includes: LR Series 3, RR Classic x 4, LR 101, Discovery 1 and 2 and now FFRR.
Yes I'm a masochist....

Not had this myself, but have you checked the disc is clean. If so, its probably the disc motor on the way out.
There is a guy in Birmingham who advertises on eBay (navman I think) who fixes these things - best drop him a note - if you search for Mk4 DVD repair on eBay you'll find him - sorted out a problem I had with mine very quickly Current Fleet:-
2018 Discovery 5 3.0 HSE
2021 Ford Ranger Wildtrack
2019 Ford Mustang Bullitt 5.0 V8
1993 Defender 90 200TDI Pickup

Gone - not forgotten
2016 L405 4.4 SDV8 Vogue SE
2012 L322 4.4 Westminster
2004 L322 4.4 V8 Autobiography LE
2000 P38 RR 4.0 HSE (ex Clarkson test car)

This is caused by the TMC feature, if the TMC system receives too many messages at the same time is causes the until to continually reboot. Eject the disc then reboot the until and it should come back up normally the. Disable the TMC system in GPS Navigation and the issue won't happen anymore

I am working on a further upgrade to the v32 firmware that will fix this issue

Matt Current
2012 Range Rover 5.0L SC Ultimate Edition
2012 Range Rover 4.4L TDV8 Autobiography
2010 Range Rover 3.6L TDV8 Autobiography
2003 Range Rover 4.4L V8 Bespoke Vehicle

Inventor of the retro fit paddle shift and many other modifications.
Creator of the custom 2010+ RR MK4 splash screen.
Creator of the Range Rover CarPC and lots more!

Founder of Range Rover Owner
rangeroverowner.com | Facebook.com/RangeRoverOwner | Latest Videos ➞ YouTube.com/RangeRoverOwner

I'm using Matt's software and don't have TMC enabled (I don't know if it's used in Oz) and I've had no problems. (Much nicer having LR Range Rover on the screen, too, rather than BMW.) Ron B. VK2OTC
2004 L322 V8 Auto
2007 Yamaha XJR1300
Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA

I'll give that a try and see what happens.

It does only seem to happen once the unit has been on a while, so I guess it could be the messages building up. I was wondering if it was overheating or something like that.

A shame because I quite like the TMC, Be good to know when there is a fix available.

Thanks

MW Car history includes: LR Series 3, RR Classic x 4, LR 101, Discovery 1 and 2 and now FFRR.
Yes I'm a masochist....

can any of these be used in 2007 units? thanks _____________________________________________________
Zambezi silver Vogue Se unique

nope  ... - .- -.




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I'm hoping to have the Range Rover firmware upgrade sorted to solve this issue over the next 4 weeks. I will announce it on this forum when it's ready.

Matt Current
2012 Range Rover 5.0L SC Ultimate Edition
2012 Range Rover 4.4L TDV8 Autobiography
2010 Range Rover 3.6L TDV8 Autobiography
2003 Range Rover 4.4L V8 Bespoke Vehicle

Inventor of the retro fit paddle shift and many other modifications.
Creator of the custom 2010+ RR MK4 splash screen.
Creator of the Range Rover CarPC and lots more!

Founder of Range Rover Owner
rangeroverowner.com | Facebook.com/RangeRoverOwner | Latest Videos ➞ YouTube.com/RangeRoverOwner

Great news, thanks

MW Car history includes: LR Series 3, RR Classic x 4, LR 101, Discovery 1 and 2 and now FFRR.
Yes I'm a masochist....