Advertise on DISCO3.CO.UK
Forum · Gallery · Wiki · Shop · Sponsors
DISCO3.CO.UK > Maintenance & Mods (D3)

Auto trans - will only shift up with command shift
Post Reply  Down to end
Page 1 of 1
Greg9504
 


Member Since: 10 Mar 2015
Location: Ottawa, Ontario, Canada
Posts: 16

Canada 2006 LR3 4.0 V6 Petrol SE Auto Buckingham BlueLR3
Auto trans - will only shift up with command shift

Hi,

Having a problem with my transmission. In drive it will not shift out of first gear, and if I don't select command shift eventually the RPM's are too high and I get a "reduced performance" message. Using Command shift I can change gears and everything seems fine. If I put it back in Drive from command shift (say after getting to 4 th gear) the car shifts down as I slow. But starting off from a stop it will not shift up, unless I do it manually with command shift. Sport mode is the same as Drive, will not shift up.

Any ideas? I have an IID tool. I hooked it up but there were no relevant error codes.

Thanks
Greg.
 2006 SE 4.0 V6 with rear locker  
Post #184182328th Jul 2017 4:31 pm
View user's profile Send private message View poster's gallery Reply with quote
Disco_Mikey
Site Sponsor 


Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 16168

Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

Brake light bulb and/or pedal switch can cause the same issues Thumbs Up
 MMP Land Rover - Land Rover + Range Rover Specialist
www.Facebook.com/MMPLandRover

Unit 9, 42 Baird Avenue
Dundee
DD2 3TN

Alive Tuning Authorised Dealer - Performance Tuning + EGR Delete

Servicing + Repairs / Fault Diagnostics / EU3+EU4 EGR Blanking / Timing Belt + Oil Pump Replacement

Software Updates+Upgrades:
4x4 Info Enable / Sat Nav OTM / 3 Flash indicators / D4 Timed Climate Retrofit

My D3 Build Thread 
 
Post #184183828th Jul 2017 4:48 pm
View user's profile Send private message View poster's gallery Send e-mail Reply with quote
Greg9504
 


Member Since: 10 Mar 2015
Location: Ottawa, Ontario, Canada
Posts: 16

Canada 2006 LR3 4.0 V6 Petrol SE Auto Buckingham BlueLR3

Hi, thanks for the help. I had replaced the brake light switch last fall when tracking down another problem (turned out to be a corroded/broken wire in sill).

I read somewhere else that a tire with a different diameter could cause it, one tire was low at about 25 lbs. After filling it, took it out for a drive and it was still a problem at first (would only shift manually), then it cleared up and started driving correctly. Figured that was the problem. Nope, after going for lunch I get back in and it's back to doing the same thing. Tire is at correct pressure.

After getting home I took it for another test drive and didn't get very far before I got the Christmas tree of warnings, hdc fault etc... I wondering if low battery (and perhaps alternator) could cause this. The IID Tool was displaying 13.5 VDC. I put an "intelligent" charger on the battery and it was reading "low". I replaced the battery with a new one back in the fall when I was tracking down the broken wire fault, so I'm thinking more the alternator... what voltage should I see when running? My plan is to charge the battery and see if things go back to normal then look at the alternator.

Thanks.
Greg.
 2006 SE 4.0 V6 with rear locker  
Post #184191028th Jul 2017 7:35 pm
View user's profile Send private message View poster's gallery Reply with quote
Greg9504
 


Member Since: 10 Mar 2015
Location: Ottawa, Ontario, Canada
Posts: 16

Canada 2006 LR3 4.0 V6 Petrol SE Auto Buckingham BlueLR3

Forgot to follow up with this. It was as Disco_Mikey suggested, a bad tail light bulb. I would have never guessed this. I replaced it the next day and haven't had the problem occur since. Thanks for your help.


 2006 SE 4.0 V6 with rear locker  
Post #187418531st Oct 2017 2:44 pm
View user's profile Send private message View poster's gallery Reply with quote
kajtzu
 


Member Since: 10 Aug 2017
Location: Helsinki
Posts: 193

Finland 2005 Discovery 3 4.4 V8 HSE Auto Cairns BlueDiscovery 3

Out of curiosity - since LED tail lights aren’t supposed to break in the same way, would replacing the originals with such ones mitigate this issue completely?

(Obviously for the cost of replacing one can keep ~100+ lights in the trunk as spares) Thumbs Up
  
Post #187419431st Oct 2017 2:51 pm
View user's profile Send private message View poster's gallery Reply with quote
Lost for Words
 


Member Since: 03 Sep 2013
Location: Warminster, Wiltshire
Posts: 6375

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Yes, and it doesn't have to be the whole unit; just LED bulbs will do, as long as they're good quality. Thumbs Up
 Current: Discovery 3 06MY (55 reg) HSE Auto Zambezi Silver Zambezi Silver Allisport Fast Road Intercooler, V8 Brakes, Silicone IC Hoses, EGRs Blanked, Remapped, De-Cat pipe, FBHIC
Freelander 2 2007 HSE Manual Tambora Flame
Previous: FL2 56 reg SE Manual Black (written off Sad )
Disco 3 06 reg B7S Manual Rimini Red Rimini Red
Disco 2 TD5 Y reg ES Manual Blue - Chipped Very Happy
Several Discovery 300 TDis
 
 
Post #187422031st Oct 2017 4:11 pm
View user's profile Send private message View poster's gallery Reply with quote
Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 1701

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

Oh the other hand, you may need to fit a resistor.

So wouldn't fit LEDs just to mitigate this!
  
Post #187424031st Oct 2017 5:29 pm
View user's profile Send private message View poster's gallery Reply with quote
Lost for Words
 


Member Since: 03 Sep 2013
Location: Warminster, Wiltshire
Posts: 6375

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Not for the brake/tail bulbs though. Thumbs Up
 Current: Discovery 3 06MY (55 reg) HSE Auto Zambezi Silver Zambezi Silver Allisport Fast Road Intercooler, V8 Brakes, Silicone IC Hoses, EGRs Blanked, Remapped, De-Cat pipe, FBHIC
Freelander 2 2007 HSE Manual Tambora Flame
Previous: FL2 56 reg SE Manual Black (written off Sad )
Disco 3 06 reg B7S Manual Rimini Red Rimini Red
Disco 2 TD5 Y reg ES Manual Blue - Chipped Very Happy
Several Discovery 300 TDis
 
 
Post #18744521st Nov 2017 8:37 am
View user's profile Send private message View poster's gallery Reply with quote
Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 1701

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

I'm amazed the brake lights don't require a load resistor will all the grief and fuss they cause.

People say use a good brand or buy from dealer, and you say you can just slap any cheap LED in there? Shocked
  
Post #18745361st Nov 2017 12:25 pm
View user's profile Send private message View poster's gallery Reply with quote
Lost for Words
 


Member Since: 03 Sep 2013
Location: Warminster, Wiltshire
Posts: 6375

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

I wouldn't stick any old LED in there; I'd only recommend good quality ones. Some have reported issues with radio interference, but my Hids4u (Twenty20) ones have been absolutely perfect. The BCM doesn't appreciate electrical noise from arcing, so the low current draw of LEDs is actually much better for it. Thumbs Up
 Current: Discovery 3 06MY (55 reg) HSE Auto Zambezi Silver Zambezi Silver Allisport Fast Road Intercooler, V8 Brakes, Silicone IC Hoses, EGRs Blanked, Remapped, De-Cat pipe, FBHIC
Freelander 2 2007 HSE Manual Tambora Flame
Previous: FL2 56 reg SE Manual Black (written off Sad )
Disco 3 06 reg B7S Manual Rimini Red Rimini Red
Disco 2 TD5 Y reg ES Manual Blue - Chipped Very Happy
Several Discovery 300 TDis
 
 
Post #18745401st Nov 2017 12:43 pm
View user's profile Send private message View poster's gallery Reply with quote
defector
 


Member Since: 23 Feb 2009
Location: Greater Manchester
Posts: 649

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Zermatt SilverDiscovery 3

And with a lower current draw, less arcing in the brake light switch, and less switch failures.
Am I right in thinking that D4's have less brake light switch problems ?
  
Post #18745671st Nov 2017 2:01 pm
View user's profile Send private message View poster's gallery Reply with quote
lynalldiscovery
 


Member Since: 22 Dec 2009
Location: Maidstone
Posts: 3920

United Kingdom 2006 Discovery 3 TDV6 Metropolis LE Auto Bonatti GreyDiscovery 3

Weirdly my D3 has eaten a few brake light bulbs and not once has it caused an issue, of course now I have written that!
 No Illeism here.  
Post #18746561st Nov 2017 6:37 pm
View user's profile Send private message View poster's gallery Reply with quote
Gareth
Site Moderator 


Member Since: 07 Dec 2004
Location: Bramhall
Posts: 22721

United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Lux Auto Fuji WhiteDiscovery 4

defector wrote:
And with a lower current draw, less arcing in the brake light switch, and less switch failures.
Am I right in thinking that D4's have less brake light switch problems ?


No, they have different brake switch problems! However, on the D3 I think the switch just sends a signal to the appropriate 'brain' which in turn will calculate if the circumstances of operation are correct, decide if the driver has actually pressed the brake, and if it feels in the mood, will put the brake lights on.

Sometimes a broken brake light filament will touch the tail light filament in the same bulb. When that happens it sends the brain into complete 'does not compute' mode, and it tries to kill the driver by various means, one of which is cutting your engine power at 70 mph with a 40 ton Lorry inches from your rear!

Wink
  
Post #18746601st Nov 2017 6:45 pm
View user's profile Send private message View poster's gallery Reply with quote
Lost for Words
 


Member Since: 03 Sep 2013
Location: Warminster, Wiltshire
Posts: 6375

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

Gareth wrote:
However, on the D3 I think the switch just sends a signal to the appropriate 'brain' which in turn will calculate if the circumstances of operation are correct, decide if the driver has actually pressed the brake, and if it feels in the mood, will put the brake lights on.


Nope - it does feed the lights directly:

Click image to enlarge


Thumbs Up
 Current: Discovery 3 06MY (55 reg) HSE Auto Zambezi Silver Zambezi Silver Allisport Fast Road Intercooler, V8 Brakes, Silicone IC Hoses, EGRs Blanked, Remapped, De-Cat pipe, FBHIC
Freelander 2 2007 HSE Manual Tambora Flame
Previous: FL2 56 reg SE Manual Black (written off Sad )
Disco 3 06 reg B7S Manual Rimini Red Rimini Red
Disco 2 TD5 Y reg ES Manual Blue - Chipped Very Happy
Several Discovery 300 TDis
 
 
Post #18748502nd Nov 2017 8:31 am
View user's profile Send private message View poster's gallery Post Reply
Display posts from the last:  
Post Reply Back to top
Page 1 of 1
Jump to:  
Previous Topic | Next Topic >


Posting Rules
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



DISCO3.CO.UK Copyright © 2004-2017 Futuranet Ltd & Martin Lewis
DISCO3.CO.UK RSS Feed - All Forums Follow DISCO3.CO.UK on twitter

DISCO3.CO.UK is independent and not affiliated to Land Rover.
Switch to Mobile Site