Immobiliser active low battery

[Sam Basildon]

Hi all newbie here. I have done numerous searches regarding this issue and can't seem to find an answer, I have a 56plate 2.0tdci 6g with immobiliser active on the screen along with low battery and the mileage had turned into ----- first thing I done was change the battery as I wasn't sure how old this one was that didn't help and the same messages were on the screen. I returned the battery and got a replacement but still the same issues. Had a man come out and scan it and it came up with U0151 and C1d14. Anyone have any ideas on what could be the issue. Thanks

[Sam Basildon]

Had a friend come round with his Forscan and this is what comes up. Crash input?? Does that mean the rcm needs to be reset. I wasn't informed it had been involved in an accident.

[johnnyroper]

Find the crash sensor and try to reset it,they have a button on to reset by pushing in usually,then try and reset fault codes and see if it starts.

Crash sensors are usually found around the bulk head area but I do not know exactly where on a galaxy.

[Sam Basildon]

Will have a look and report back. Thanks

[insanitybeard]

Looking at the parts diagram the Mk3 has separate sensors for front and side impacts (14B004 and 14K153 respectively) but I've never seen these to be 'resettable' by means of a button- at least on Fords, usually any defect in the sensor would require it's replacement.

[johnnyroper]

The ones I have seen have a rubber boot on the top and a reset button in middle of it.

[insanitybeard]

The Ford fitted crash sensors I've seen to date look like this, I've not seen the type you describe, what make of cars were they fitted to?

[johnnyroper]

Is that the ones just for the airbags? Vauxhall have those and a separate resettable one that kills engine.

[johnnyroper]

Like this one.

[insanitybeard]

Not seen anything like that on Fords (at least anything like that that was linked to the restraints system) though at least some of the older petrol Ford variants had the inertia switch designed to cut the fuel supply if the deceleration was sufficient which kind of accomplished the same thing, not sure if more modern Fords still have this or if the restraint module can shut the engine down in the event of an impact. Yes to my knowledge the type of sensor I linked above serves only to detect impact/ rapid deceleration.

[Sam Basildon]

Just a quick update. I've checked all looms fuses relays etc. I have an auto electrician coming out tomorrow as he can apparently reprogram all modules and update them if necessary.

[Sam Basildon]

So this morning it was hooked up to ford ids, the mechanic went through all the modules except Abs module it wouldn't let him connect. He came back to me saying I need a new abs module my question is would that stop my car starting if so can I get a used one and have it programmed to my car

[insanitybeard]

I don't have much experience with the newer CAN-bus electrical systems that the more modern vehicles are equipped with but if one module such as the ABS module has gone down then yes it could cause all manner of faults as the various modules all communicate with each other and may use signals from other modules as references. If you got another ABS module with the the same engineering number (usually on a label on the unit itself) then it should be ok to use, however it may need to be programmed/ initialised to the vehicle with IDS.

It's also worth making sure before replacing the unit that it's not failed because of a wiring fault/ electrical short or loss of power.