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DISCO3.CO.UK > Faults & Fixes (D4)

Transmission/ Gearbox Fault.
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TheRealKon
 


Member Since: 08 Aug 2019
Location: London
Posts: 7

United Kingdom 2010 Discovery 4 3.0 TDV6 XS Auto Unknown ColourDiscovery 4
Transmission/ Gearbox Fault.

I got a gearbox error/Transmission fault which doesn't let me use the manual shift mode and sometimes says restricted performance. However these errors disappear when I turn on the daytime running led lights.

Any ideas what the problem could be?

Cheers  
Post #20745638th Aug 2019 4:39 pm
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Weyboat
 


Member Since: 13 Apr 2018
Location: Weymouth
Posts: 273

England 2015 Discovery 4 3.0 SDV6 HSE Auto Corris GreyDiscovery 4

Quote:
However these errors disappear when I turn on the daytime running led lights.

Are you sure you mean when I turn 'ON' the daytime running led lights? Gone 2016 Landmark D4
Current 2015 HSE D4 - AKA - 'Gandalf the Grey'  
Post #20745688th Aug 2019 4:47 pm
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TheRealKon
 


Member Since: 08 Aug 2019
Location: London
Posts: 7

United Kingdom 2010 Discovery 4 3.0 TDV6 XS Auto Unknown ColourDiscovery 4

Yes, when I turn the headlights on the fault disappears and I'm able to select S1, S2 etc..

Very odd..  
Post #20745778th Aug 2019 5:14 pm
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TheRealKon
 


Member Since: 08 Aug 2019
Location: London
Posts: 7

United Kingdom 2010 Discovery 4 3.0 TDV6 XS Auto Unknown ColourDiscovery 4

When I do turn on the headlights I hear a very audible tick sound coming from the fuse box in the glove box. I've had a look and it seems it may be coming from one of the big groups of wires. Is there a chance that a wire is corroded or something?  
Post #20746749th Aug 2019 10:34 am
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SteveKK
 


Member Since: 11 Apr 2019
Location: North Herefordshire
Posts: 287

Ukraine 2010 Discovery 4 3.0 SDV6 HSE Auto Buckingham BlueDiscovery 4

It does sound like an earth fault. By switching the headlights on you are allowing some other system to earth properly though the headlight circuit. I would try to identify which relay is activating when the lights go on and start looking there.

I don't envy you trying to troubleshoot this!

Regards,
Steve  
Post #20746979th Aug 2019 12:54 pm
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TheRealKon
 


Member Since: 08 Aug 2019
Location: London
Posts: 7

United Kingdom 2010 Discovery 4 3.0 TDV6 XS Auto Unknown ColourDiscovery 4

Thank you for your responses, it's time to get looking!  
Post #207543812th Aug 2019 10:56 am
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M3bobby
 


Member Since: 21 May 2018
Location: Sleaford, LINCS.
Posts: 857

United Kingdom 

Which model and year do you have? My DRLs are on regardless of headlights being off. Are these DRLs the dealerfit or aftermarket types?  
Post #207544312th Aug 2019 11:03 am
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TheRealKon
 


Member Since: 08 Aug 2019
Location: London
Posts: 7

United Kingdom 2010 Discovery 4 3.0 TDV6 XS Auto Unknown ColourDiscovery 4

My model is a 2010 TDV6 XS 3.0.

The lights are stock, haven't been modified in any way.
I'm still kinda unsure where to start looking from. Do you know which relay to check and in which location?

P.s I'm a total noob, don't know too much about this stuff  
Post #207566913th Aug 2019 9:31 am
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Chris J
 


Member Since: 04 Mar 2020
Location: North West
Posts: 1

United Kingdom 2009 Discovery 4 3.0 TDV6 HSE Auto Baltic BlueDiscovery 4

Did you find this fault? A similar thing has just happened to mine?  
Post #21256914th Mar 2020 3:50 pm
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TheRealKon
 


Member Since: 08 Aug 2019
Location: London
Posts: 7

United Kingdom 2010 Discovery 4 3.0 TDV6 XS Auto Unknown ColourDiscovery 4

Unfortunately not! Its been years now. still get the same gearbox error.  
Post #214967627th May 2020 4:24 pm
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