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Dreaded a Transmission Fault
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Rpettifer
 


Member Since: 13 Mar 2019
Location: Nerja
Posts: 1

Spain 2007 Discovery 3 TDV6 HSE Auto Buckingham BlueDiscovery 3
Dreaded a Transmission Fault

Hi all. Over the last few days I have been having the issue where the dashboard lights up and I get several messages about transmission fault, parking brake fault and suspension lowered. The letter F appears in the gearbox window. Turning off and on again clears the issue.

I have narrowed it down to it only happening when going up a long hill near my house with the AC on. Going up the hill with no AC is fine.

I replaced the battery last week and it stopped for a few days but now it is back.

It is going into my local garage tomorrow but I wanted to see what you guys thought. Sounds possibly like an alternator issue?!
  
Post #203667113th Mar 2019 7:06 pm
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kajtzu
 


Member Since: 10 Aug 2017
Location: Helsinki
Posts: 6538

Finland 2005 Discovery 3 4.4 V8 HSE Auto Cairns BlueDiscovery 3

Do you have a code reader? I had almost the same happening for me and yours sounds also very much like the brake light switch.

Please see the thread https://www.disco3.co.uk/forum/special-pro...79459.html

I wouldn’t want to speculate alternator without diagnostics.
  
Post #203703214th Mar 2019 8:20 pm
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carbore
 


Member Since: 06 Apr 2016
Location: Cornwall
Posts: 545

United Kingdom 2009 Discovery 3 TDV6 HSE Auto Zermatt SilverDiscovery 3

Hi,

Also check your brake light bulbs, mine did a similar trick caused by a blown bulb!
 Disco 3: Lotus Elise S1: Ferguson T20: Audi A2  
Post #203743816th Mar 2019 1:43 pm
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Black Knight
 


Member Since: 08 Nov 2016
Location: Cheshire
Posts: 37

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Unknown ColourDiscovery 3
Same issue

Without wishing to hijack the thread, I have had the same issue though I can’t narrow it down to a particular set of circumstances. I have replaced a bulb and the brake light switch to no avail. Battery and alternator only a year old.
I took mine in to a local indy to have the codes read but it only revealed what the mechanic described as U (communication) codes. Apparently the cause of the fauly was not stored. He advised me to bring it in again next time the fault occured without switching off the ignition. So nearly 2 weeks later it throws a wobbler again on a stretch of dual carriageway. The problem is that I was stuck in gear and too far away to negotiate lots of junctions and roundabouts whilst being stuck in 6th so I was forced to pullover and reastart. Hey presto, fault cleared!
Its a catch 22; I need the fault to occur to get it diagnosed but I’ve no clue as to when and where its going to occur.
Any advice very welcome Rolling Eyes Censored
 2008 Discovery 3 TDV6 HSE  
Post #203872720th Mar 2019 7:11 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10336

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

If it happens again
Push it over to sport and down shift many times to see if it will eventually select 4 5
When u have slowed down a bit.
  
Post #203874520th Mar 2019 8:28 pm
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Black Knight
 


Member Since: 08 Nov 2016
Location: Cheshire
Posts: 37

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Unknown ColourDiscovery 3
Update

After an almost repeat performance today whereby numerous faults, lights and bongs appeared I managed to drive to the local Indy garage.
With the engine still running and the live data available, a ‘cross articulation’ fault was found. Basically, the height sensors needed to be recalibrated. This was done and I was able to drive home without incident........so far!
 2008 Discovery 3 TDV6 HSE  
Post #203894921st Mar 2019 6:37 pm
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Black Knight
 


Member Since: 08 Nov 2016
Location: Cheshire
Posts: 37

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Unknown ColourDiscovery 3

Lasted 2 days then its bong bong fault, fault again Big Cry
 2008 Discovery 3 TDV6 HSE  
Post #203991824th Mar 2019 7:22 pm
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