Hi all some advice please. Car in RR dealers for oil service, new brake pads front and rear and to look in to fault with gear box where it shunts from 2 to 1st when pulling up. Collected car last night and as I drove on the motorway the following errors appeared
HDC fault
Transmission fault
Lowering suspension
with the traction control and the amber brake light warning lamp all remaining illuminated. Stopped the car and everything reset. However when ever I went over 70mph all errors re-appeared.
So......took car back today everything now seems to be fixed. Cause / fault explained as faulty break pedal switch which must have been knocked OR became faulty coincendtally. Of course no cost to fix Sir.
Now I am no mechanic but can someone please tell me what the relationship between a break pedal switch, and the errors above might be or am I having my leg pulled ?

Ideas ?

CMJ wrote:

Hi all some advice please. Car in RR dealers for oil service, new brake pads front and rear and to look in to fault with gear box where it shunts from 2 to 1st when pulling up. Collected car last night and as I drove on the motorway the following errors appeared
HDC fault
Transmission fault
Lowering suspension
with the traction control and the amber brake light warning lamp all remaining illuminated. Stopped the car and everything reset. However when ever I went over 70mph all errors re-appeared.
So......took car back today everything now seems to be fixed. Cause / fault explained as faulty break pedal switch which must have been knocked OR became faulty coincendtally. Of course no cost to fix Sir.
Now I am no mechanic but can someone please tell me what the relationship between a break pedal switch, and the errors above might be or am I having my leg pulled ?

Ideas ?

TDV8 07 43,000 miles

CMJ wrote:

TDV8 07 43,000 miles

the brake pedal switch or one of them does control all of those functions in a round about way so yes its correct  onto no6 Range Rover

Everyone needs a hobby

I also noticed the brake pedal switch causing all kinds of warnings when it breaks in the forums, so again the mechanic could be right. That is modern electronics for you, one tiny little switch fails and the whole thing is in ruins. Must be all the bits and bytes getting lost in cyberspace

Sometimes I long back for my first car, Triumph Herald, simple so you could keep it running with a screwdriver, adjustable spanner and electrical tape  MY 2010 5.0 SC Galway green and sand interior!!
Have the Faultmate MSV2 Extreme to be tinkering with the settings etc. !!

ebajema wrote:

Sometimes I long back for my first car, Triumph Herald, simple so you could keep it running with a screwdriver, adjustable spanner and electrical tape

You forgot the FBH. No NOT the fuel burning heater

To hopefully add some value to the OP, I had the same lurch on the 2 -> downshift, which was actually a nasty bang if you were trickling up to a junction and decided to go for a gap. This was on my D3 V8. The cure for me was 3 things.
1. Get the gearbox ECU updated by the dealer. There is a map to help alleviate this.
2. Flush the transmission fluid as completely as possible.
3. reset the gearbox adaptives to remove any bad habits it miht have learned.

Not a 100% cure but certainly 90% better.

Some details of what I found on the web when researching this.

Subject/ConcernSubject/Concern: 2-1 Harsh Transmission Shift

ModelsModels:
Discovery 3 / LR3 V8 Gasoline Only
V8 Gasoline Only VIN-rangerange: 5A000360-6A402253
Range Rover (LM)
VIN-rangerange: 6A198058-7A263534
Range Rover Sport (LS) Supercharged Gasoline Only
Supercharged Gasoline Only VIN-rangerange: 5A900302-7A999999
VIN-rangerange: 7A100000-7A119896

MarketsMarkets: All
SectionSection: 307-00

SummarySummary:

Customer concern is:

• When the vehicle downshifts 2-1 and the throttle is re-applied, a thump is felt.

• 2-1 rollout downshift - As the vehicle comes to rest, a thump is felt.
CauseCause: Transmission software calibration issue. Suggested Customer Concern Code - P66.
ActionAction: Should a customer express concern, reconfigure the Transmission Control Module (TCM) and ensure the Engine Control Module (ECM) is on a equivalent level of software, if not, reconfigure the ECM. Follow the Service Instruction outlined below.

If you examine each system in detail (=read the manual), you'll see that each system has some sort of input from the brake light switch. Yes our very electronic cars are a long shot off the primitive mechanical vehicles we used to ride in - and that allows us to have power levels that used to be only supercar territory, consumption that used to require driving an econobox, safety that could not be achieved back then (DSC, SRS,etc), GPS guidance, etc, etc, etc

And don't call me Shirley. 
RRC 2Dr, RRC 4Dr,
P38, and 2 L322s
(wife thinks I'm nuts - prob right, too)

I thought it would only be time before the 'Shirley' factor was mentioned.

Thanks all for comments. Looks like I should be less sceptical about garages and especially main dealers !!

dosent suprise me, I had a similar array of errors over a few weeks, and finally ended up being a £17 speed sensor wire for the ABS

those brakes are wired into everything LOL  cheers
bogie

CMJ wrote:

I thought it would only be time before the 'Shirley' factor was mentioned.

Sorry. Stupid humor.  
RRC 2Dr, RRC 4Dr,
P38, and 2 L322s
(wife thinks I'm nuts - prob right, too)

SteveMFr wrote:

CMJ wrote:

I thought it would only be time before the 'Shirley' factor was mentioned.

Sorry. Stupid humor.

shirley not steve...


i like stupid humour..

 
RRC 2Dr, RRC 4Dr,
P38, and 2 L322s
(wife thinks I'm nuts - prob right, too)