Member Since: 09 Nov 2021
Location: Peterborough
Posts: 49
Hdc problem, can anybody direct me where is the problem
Hi ALL
I have problem with hdc I have done couple things already clean all valves, checked hi sensors, compressor and pipes... all looks ok, but fault still coming and I have founded out my gearbox is sticking sometimes on random gears so i changing into manual to get correct gear and then Bang ---->HDC
Is anyone had same problem? Is anyone can help me point the issue? Change the gearbox oil and filter maybe? Or EGR /egr sensor ???
So many questions 😋 so hopefully someone will point me to right direction ? Massive Thanks !!!
17th Nov 2021 5:44 pm
Sea Raider
Member Since: 01 Nov 2016
Location: None
Posts: 4450
Have you had the codes read, if not that would be my first answer
17th Nov 2021 5:46 pm
RajahSTY
Member Since: 09 Nov 2021
Location: Peterborough
Posts: 49
Its quite few actually 🤯😉 🤦♂️ but slowly getting there😉
17th Nov 2021 6:21 pm
RajahSTY
Member Since: 09 Nov 2021
Location: Peterborough
Posts: 49
17th Nov 2021 6:30 pm
Sea Raider
Member Since: 01 Nov 2016
Location: None
Posts: 4450
I would start with the brake switch
Reset the codes and see what comes back
17th Nov 2021 6:43 pm
RajahSTY
Member Since: 09 Nov 2021
Location: Peterborough
Posts: 49
I have already swap brake switch but I've founded another issue which can also causing problems
17th Nov 2021 6:50 pm
RajahSTY
Member Since: 09 Nov 2021
Location: Peterborough
Posts: 49
This beautiful electrical job for tow bar its unbelievable 🤣🤦♂️ I'm looking for diagrams or something to get this back to normal, then I will disamble tow bar 😉
17th Nov 2021 6:53 pm
paul123
Member Since: 22 Mar 2020
Location: norwich
Posts: 235
how old is your battery ? i had the hdc fault the battery seemed ok . it went flat once i fitted a new one and the hdc fault went away.2005 discovery 3 tdv6
1971 200 tdi 2 door range rover
300tdi defender 90 in bits needs lots of work
17th Nov 2021 9:04 pm
RajahSTY
Member Since: 09 Nov 2021
Location: Peterborough
Posts: 49
Brand new battery (1week old) unfortunately I haven't got IID tool to do properly Diagnostic I actually want to buy one or even hire just to get this beauty running nicely. I have read somewhere I have to also confirm battery change through IID (but I'm new in LR so dont know everything yet 😉
17th Nov 2021 9:14 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4939
New brake light switch, and ditch those mickey mouse scotch locks.
This should answer your other thread problem too!!yµ (idµ - eAµ) ψ=mψ
17th Nov 2021 9:47 pm
RajahSTY
Member Since: 09 Nov 2021
Location: Peterborough
Posts: 49
Profsr g
Do u think that will eliminate transmission problem? Sometimes gears sticking and in almost same time or seconds after I'm getting hdc... Is flashing ECU and updating other modules will be enough ro fix it or do I have to change gearbox oil, filter, solenoids etc ?? I will definitely start from sorting this "Mickey mouse " stuff 😅 just need some advice how to come back to standard settings, so diagram would be benefit ✌😉
17th Nov 2021 10:19 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4939
Diagnostics is telling you the brake light switch is at fault, and this is a critical communication component between all the power train control modules.
Start there and see what faults remain, but that wiring looks shoddy so I'd be rectifying these issues first. Then hopefully things will become clearer.
I'll post the wiring diagram later when I'm home.yµ (idµ - eAµ) ψ=mψ
17th Nov 2021 10:44 pm
RajahSTY
Member Since: 09 Nov 2021
Location: Peterborough
Posts: 49
PROFSR G
Thats stuff looks very dangerous ( I would say I'm lucky the car still didnt burn yet) I will start disconnecting this piece of art tomorrow, if can send me diagram would be great
THANK YOU VERY MUCH
17th Nov 2021 10:55 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4939
This is for the MY 08> but shows the trailer wiring for European models, Pages 165/6.
The original factory wiring loom for the trailer sockets runs from the fuse block out of the body beneath the l/h/r light and is joined via a multi plug behind the rear bumper. From there the loom runs through the bumper to the trailer sockets. If the car has had a bodged wiring job done, the original loom from the connector behind the bumper to the sockets is available either new or second hand. The PDC loom follows a similar path, but if you remove the rear lamp you will see if the original wiring is actually there, or some other aberration. yµ (idµ - eAµ) ψ=mψ
18th Nov 2021 12:29 am
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4939
RajahSTY wrote:
I have read somewhere I have to also confirm battery change through IID (but I'm new in LR so dont know everything yet 😉
Not required for the D3, on a D4 yes. As for "knowing everything" I'm at it for over 40 years now and every day is still a school day. yµ (idµ - eAµ) ψ=mψ
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