Help 4 Amigos!!

Your help would be greatly appreciated. I know this subject comes up time and again, but can anyone help? I have 2002 Freelander 1 TD4 ES Automatic. Was driving home and had to brake hard when a car came out in front of me. 4 warning lights came on, hand brake light, ABS, TC and HD. Switched off and on again and they cleared but came back again after about 15 mins. This continued for a few months and now they come on a stay on constantly. I’ve tried changing the brake light switch twice, original one and the modified one with harness adapter. Today took it to a Land Rover specialist to have it plugged into a an AutoLogic reader, only fault codes under ABS were 'C1117 valve drive failure' and 'low battery voltage'. They couldn’t pin point the fault just said it would have to investigated anything up to 4 hours labour!! Battery is of good quality and brand new and charging correctly. Anyone had similar symptoms and found the cause?

I'm pretty sure that if you've got 4 lights lit then it is brake fluid level, or the float sensor that's at fault.

At least it'd be the first place I'd look.

Not quite 4 hours diagnosis there!

I have checked fluid level and did voltage check across pins (12.4v) and also bridged the connector. Still had lights on. Fairly sure sensor is not the problem

I'm guessing it's a more serious fault with the ABS modulator. I'd get a replacement ABS modulator assembly and swap it out.

Yes, I'm beginning to think that myself. Can you give any advice about fitting a replacement ABS Modulator(second hand) Mine is the Teves MK25. Does the replacement have to programmed to the car? Any special requirements for bleeding the system after, would probably use a Sealey or similar pressure bleeder

Might be worth getting it pressure bleed using the diagnostics first by forcing the pump and the valves as you could have air trapped in the modulator causing your issue

You mean using ABS bleed function on a diagnostics scanner?

Did you get anywhere with this? I've got the same C1117 Valve Driver Failure error message along with the four lights.

tonyblack said:

Did you get anywhere with this? I've got the same C1117 Valve Driver Failure error message along with the four lights.
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Refer to post 4 on this thread.

Ordered replacement ABS Modulator and while waiting for it to arrive I thought I'd take one last look at the existing ABS modulator. Removed cable connector and gave it a liberal coating of WD40 before replacing it. I then took a rubber mallet and proceeded to tap all the way around the outside of the modulator. Went out in it the next day and it was a while before I realised it but the 4 Amigos weren't on. They have stayed off ever since. Must have been a sticking valve in the Modulator. Useful one to tuck away in the memory bank for future reference.

tonyblack said:

Must have been a sticking valve in the Modulator.

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It could be a bad connection on a shuttle valve, so it might come back at some point.