Hey guys  

Has anyone had there pre collision assist become not available even after cleaning the grill and there's nothing obstructing it too as I have now getting it pop up constantly on my 72 plate fiesta and the only thing I can think of is that it's error code as driving normally it would alert that I was close to another car when there wasn't anything infront of me and also alerting me when I was overtaking hgvs on a A road again with nothing infront of me which would have set it off. 

 

Any idea what the fix is as its booked in for a diagnostic check at local vertu dealership bit sort of expecting a bill for a potential repair even though it's still got orginial ford warranty in place 

Probably need a battery.

See if the camera on the windscreen is clean?

Sensor/camera at the top of the windscreen covered in dead bugs ?

All clean as cleaned the car to make sure everything is clean and hope that it would fix it 

On 5/13/2025 at 1:23 PM, DaveT70 said:

Probably need a battery.

See if the camera on the windscreen is clean?

 

On 5/13/2025 at 2:22 PM, unofix said:

Sensor/camera at the top of the windscreen covered in dead bugs ?

All clean as washed the car when I washed the grill and left it over night in hope that it fixed itself bit nope just having to wait a week today to get it in the local dealer and hopefully its a simple fix which will be under warranty 

14 hours ago, Jamma31 said:

 

All clean as washed the car when I washed the grill and left it over night in hope that it fixed itself bit nope just having to wait a week today to get it in the local dealer and hopefully its a simple fix which will be under warranty 

Yeah, it'll need a new battery👍

3 hours ago, DaveT70 said:

Yeah, it'll need a new battery👍

Oh hopefully covered under warranty then but guessing not though 

Very, very slight maybe.

If it isn't buy and fit your own, much cheaper

7 hours ago, DaveT70 said:

Very, very slight maybe.

If it isn't buy and fit your own, much cheaper

Any idea where this battery is fitted as I am guessing it isn't the one under the bonnet which powers mostly everything as that's fine as had it checked out 

That's the one I'm on about, main 12v

Probably needs to go in then, camera fault or software

Have you actually checked the battery voltage?

My experience over 7 years with 2 Mk 8 Fiestas, is that, unless you're doing a substantial mileage on a regular basis, periodic battery charging is necessary.

A multimeter and a smart battery charger (Maypole, Noco, C-tek, etc) are virtually essential with these cars.

On 5/19/2025 at 7:51 AM, DaveT70 said:

That's the one I'm on about, main 12v

Probably needs to go in then, camera fault or software

Was the module that failed so replacement is now on order after a few resets and test drives to see if the resets worked which seen in the ford app that there was more pre collision assist notification popping up everytime they tried something 

On 5/19/2025 at 8:44 AM, Eric Bloodaxe said:

Have you actually checked the battery voltage?

My experience over 7 years with 2 Mk 8 Fiestas, is that, unless you're doing a substantial mileage on a regular basis, periodic battery charging is necessary.

A multimeter and a smart battery charger (Maypole, Noco, C-tek, etc) are virtually essential with these cars.

Yes as the battery when I bought the car had started to have issues starting so replaced with a new battery and that was 2 months ago but problem sorted and fix incoming when the local dealership has got the replacement module instock