Freelander 1 relay part numbers

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chris1959

Member
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21
I have a 2003 TD4 kalahari and want to replace the HDC relay. My HDC amber fault light comes on now and again but always clears after ignition is switched off. As long as HDC fault light is off the HDC works perfectly. I think there is a duff connection somewhere and having checked thge reverse and first gear switches (as well as I can) I want to replace the HDC relay. My HDC relay is yellow and has a Ford part number G1UHD 93G614N0898 BIB V23136-B1-X33.
There are a few different "yellow" under bonnet relays advertised and I cannot be sure that I am buying the correct one. Is there any listing of equivalent relays to my Ford one - which must be the original fitment.
 
I don't think they are - there are several different part numbers of "yellow" relays for under bonnet freelander 1 application e.g. YWB10012L and YWB000150 . Also my point is that mine are Ford and have a Ford number whereas all the LandRover parts sellers list YWB numbers which cannot be matched with the Ford number. There is a schematic picture on the side of mine but this is not shown on the vendor's websites. I just want to buy a new HCD relay but cannot see how to choose.
 
What makes you think that changing the HDC really will put the light out? The relay is just a relay, nothing more. It's only active when the HDC is active. Have you checked the pedal switches are working correctly and made sure that the gear position switches are working? Also with some faults, the codes need to be cleared before the HDC light goes out, even if the original fault was fixed. It's best to get the codes read before randomly throwing parts at it.
 
Hello Nodge68
The HDC fault light has been coming on for no apparent reason for some time. My local independent LRover specialist garage had the vehicle for a week driving it around but (sod's law) the intermittent fault did not show. This was last year, since then it shows up now and again but it always cleared after ignition switch off and back on. I have checked the 1st and reverse switches and I changed the pedal switch assembly for a newer specification one. When the HDC fault LED is not "on" HDC works properly according to the manual (flashing green LED and solid green LED if 1st or reverse selected)
The detection of a HDC fault ONLY seems mysterious because there is no explanation in RAVE for what the possible faults could be. Therefore since the Relay was easily identifiable I thought that swapping it might be worth doing. In fact I have now gone a stage further and taken the relay out and then used HDC - result is a genuine "fault" that has been logged and now needs to be cleared.
I suppose my real question is "what sort of fault will allow the HDC light (ONLY) to come on but that will clear after ignition off / on? "
 
Not many faults show just the HDC light. There are 3 iirc.
1st is: Gear selection implausible. This means that the 1st and reverse switches are both active at the same time. Obviously the gearbox can't select 1st and reverse simultaneously so this is often a stuck switch.
2nd is: Clutch pedal switch not giving a proper transition from make to break.
3rd is: Accelerator pedal at rest switch not breaking contact when it should. This switch is a reed switch and must break before the throttle opens too much or a fault is registered. However I'm not sure if a TD4 has the throttle position switch.
Those are the only faults that show just the HDC light.
 
Hi Nodge68
been to garage this morning and had fault light cleared of my self inflicted -removing the relay - fault, this was for free as I get the Freelander serviced there regularly
garage guy's computer showed several other possibilities - top of the list was
CO501 /13 (YN) - CO932/13 13 (YN) followed by CO501/44 (YB) - CO932/34 (YB) I intend to locate these connectors ( probably pretty inaccessible I should think!) and give them a proper clean - these connector faults are not stored and so go away when the ignition is switched off/ on. A slightly corroded connection can give enough voltage drop (even if only for a brief time) to cause a fault.
Obviously actually removing the HDC relay (which only appears to operate the brake lights when using HDC), also causes a stored HDC fault so a duff relay could also give just a HDC fault as well as the ones you mentioned.
According to my garage corrosion of connectors causing an intermittent voltage drop is a very common problem on many vehicles - Range Rovers were mentioned.
I think that generally connectors are pretty much the same as they were on 1960s cars but much more is needed from them nowadays but as long as they last through the warranty the manufacturer does not care because a few random intermittent faults will encourage people to buy a new car. Audis also bad apparently.

I did not realise the clutch pedal had a switch but it is another thing worth checking. I do not think the TD4 has a throttle switch because on some other thread I saw the LandRover factory advice about the throttle switch but it only applied to K series. Thanks for your interest.
 
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