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Discussion starter · #21 ·
This is still tripping out very regularly (every couple of days). I'm absolutely sure that sometimes it's caused by those radar speed detecting flashing warning signs that you often see on the way into 30mph limit sections. The ones around my area seem to be about 50/50 whether they trip the forward emergency braking or not - sometimes I can drive past them no bother, other times it shuts down. I've also had it happen three times in the same place, where there are not radar speed warnings, a very rural spot with nothing about at all. Three times seems like more than a coincidence.

The most annoying thing is that it never re enables itself afterwards - the orange warning light stay on the dashboard until you turn off the engine. No reason at all why it can't have another listen after 5 or 10 minutes and then re enable if it doesn't detect interference. Another example of crappy engineering by the manufacturer.
 
Discussion starter · #22 ·
My NP300 was back at the dealer again recently, for this and other issues to be investigated. This time the only fault code it had stored was something to do with the brake pedal sensor/switch. So I'm waiting on replacement parts for that. I think it may be related to the FEB disabling, as I've noticed that only ever happens during/at the bottom of a long/steep hill.
 
My NP300 was back at the dealer again recently, for this and other issues to be investigated. This time the only fault code it had stored was something to do with the brake pedal sensor/switch. So I'm waiting on replacement parts for that. I think it may be related to the FEB disabling, as I've noticed that only ever happens during/at the bottom of a long/steep hill.
Certainly sounds like there's something wrong. For me, the NP300 probably disabled its emergency braking thing about 5 times, but they all seemed to be in the first few thousand miles. It's done 16k miles now and haven't had any errors pop up for ages (touch wood!!!).

Good luck!
 
Discussion starter · #25 ·
It seems to be happening more and more often, almost every time I go down a long, steep hill (so fairly extended light use of the foot brake) it kicks it off. I do live in a very hilly area, so maybe that's why I'm seeing it more often than others, or maybe there is something not quite right with mine.

Not sure how the ECU has decided there is a problem with the brake pedal switch, but it was a stored fault with a date a couple of weeks prior to the dealer looking at it. The FEB had last tripped off the day before it went in though, so I'm not totally convinced they're related. But we'll see what happens after they've swapped the brake pedal switches.
 
Discussion starter · #26 ·
Update on this - the dealer replaced both of the brake pedal switches, and it does seem to happen less often, but it is still happening. Definitely seems to be related to a long slow descent down steep hills. I've not taken it back in yet, but I expect the dealer is out of ideas now.

I think they also adjusted the clutch pedal resting position while it was in, because the clutch started slipping shortly after I got it back. I've adjusted it back a bit and it hasn't slipped since.
 
Update on this - the dealer replaced both of the brake pedal switches, and it does seem to happen less often, but it is still happening. Definitely seems to be related to a long slow descent down steep hills. I've not taken it back in yet, but I expect the dealer is out of ideas now.

I think they also adjusted the clutch pedal resting position while it was in, because the clutch started slipping shortly after I got it back. I've adjusted it back a bit and it hasn't slipped since.
Today mine has piled on the brakes for no reason ,got one beep and then brakes on and shuddering halt from 70 only stopped by me actually touching the brake pedal . It will be in the dealers tomorrow am to see what they make of it luckily we have front cctv that shows it very clearly happening with no cause. They can keep it as long as they like as I have v6 VW for three months to evaluate ,first sign of VW willing to compete with a 4 truck carrot waved under their noses also LR defender in the frame as well.
 
Today mine has piled on the brakes for no reason ,got one beep and then brakes on and shuddering halt from 70 only stopped by me actually touching the brake pedal . It will be in the dealers tomorrow am to see what they make of it luckily we have front cctv that shows it very clearly happening with no cause. They can keep it as long as they like as I have v6 VW for three months to evaluate ,first sign of VW willing to compete with a 4 truck carrot waved under their noses also LR defender in the frame as well.
How did you manage that?
 
How did you manage that?
The dealership was built next door to our main yard and they would love to get the business for four trucks . They also dont like seeing Navs go in and out probably more worried about potential customers seeing them.. They have yet to come back with an answer on the biggest deal breaker yet! Yes the towing limit!!!!
 
Discussion starter · #30 ·
Today mine has piled on the brakes for no reason ,got one beep and then brakes on and shuddering halt from 70 only stopped by me actually touching the brake pedal . It will be in the dealers tomorrow am to see what they make of it luckily we have front cctv that shows it very clearly happening with no cause. They can keep it as long as they like as I have v6 VW for three months to evaluate ,first sign of VW willing to compete with a 4 truck carrot waved under their noses also LR defender in the frame as well.
Sounds bordering on dangerous to me, anyone behind you would have crapped themselves! Unfortunately, I'm not the least bit surprised that it happened, probably just another 'glitch' in the software. Has the dealer looked at it yet?
 
Discussion starter · #31 ·
This is still playing up on mine, dealer having it in for another look next week. They suggest it might be caused by dirt on the front camera lens, but I thought that was only used for the parking cameras and the FEB worked solely off the radar sensor? The problem is definitely related to long descents/extended periods of braking.
 
The FEB has de-activated/thrown warning a few times on mine in the last few weeks. Always been in heavy rain, sleet or snow. Not a huge problem as I can turn it off in the settings.

(my reversing camera is also useless in heavy rain or snow as the lens gets covered and results in a very blurry screen)

What worries me is the fact the technology doesn't seem very reliable or capable of working in bad weather. Isn't this the same sort of technology used in self driving cars?? I don't know about anybody else but it concerns me that there is a rush to get these self driving cars on the roads before the technology is mature or safe enough to deal with typical northern UK winter weather. I can just picture a load of accidents after these cars all decide to stop on the motorway after their systems fail in snowy conditions.
 
Discussion starter · #33 ·
The FEB has de-activated/thrown warning a few times on mine in the last few weeks. Always been in heavy rain, sleet or snow. Not a huge problem as I can turn it off in the settings.
You mean when you get message similar to 'FEB sensor obstructed' and the icon goes yellow? Yes, I've had that occasionally too, but that's different to the main problem I'm getting regularly - the orange warning symbol lights up on the dash, the FEB deactivates and won't come back on without restarting the engine. No other NP300 owners seem be having that occur?

Looking online, it appears that the latest version of Nissan's FEB has pedestrian detection, and it uses the front camera for that. Don't think the NP300 has pedestrian detection though?
 
I definitely get an orange warning icon on the dash (not talking about the little feb icon turning yellow at top of screen, it does that too), this is a strange looking icon in the odometer where other warnings appear. Screen definitely used the words de-activated too. It has happened pretty much every time I've driven in heavy snow or heavy rain, also happens to a lesser extent in windy weather! So basically not fit for purpose in typical northern UK weather :)
 
@TJ16 That is a common problem, and it's when the forward facing radar can't cope with the additional data created due to the fast flow of snow/heavy rain etc past the sensor. It is not a "fault" it's just a poor system The problem @mike-b is having is quite different, where the system randomly fails even without the added data caused by precipitation.
 
@TJ16 That is a common problem, and it's when the forward facing radar can't cope with the additional data created due to the fast flow of snow/heavy rain etc past the sensor. It is not a "fault" it's just a poor system The problem @mike-b is having is quite different, where the system randomly fails even without the added data caused by precipitation.
Ah OK

I found a setting to disable the damned thing so mine no longer gives me the annoying warnings. No point in having something fitted or enabled if it is that unreliable.

Where is the sensor for them? Same place as auto lights by any chance? as they are equally naff, don't come on in snow or rain but do turn themselves on during nice sunny days! Have to manually turn them on to gain reliability so another pointless/poor system IMHO.
 
Auto light sensors are the two circles either side on the windscreen blower vent on the dash. The FEB radar is behind the front bumper.

If you turn the FEB off in the settings does it stay off, or do you have to turn it off each time you start the truck?

Sent from my mobile device. Please excuse brevity and mistakes.
 
You have to turn it off each trip.

I'm used to doing this sort of thing, we used to have to disable the eco mode (stop/start) on our corsa every trip too. That nearly killed me after it cut the engine as I accelerated into a gap on a busy motorway roundabout. It was a known issue, if you slowed right down approaching the roundabout and nearly came to a stop before accelerating again (into a gap in traffic) the engine would always cut out. This then required you to engage handbrake, put foot on clutch and turn off the ignition then on again to restart engine. An HGV thankfully brakes hard and stopped 2" away from my drivers door. From that day on I disabled it every time before setting off. My friend also experienced the same problem in his BMW but he was not so fortunate, suffered significant crash damage. He had to get dealer to permanently disable it because it scared him so much.

These systems are only good if they are reliable and sadly in my experience they are not.
 
Discussion starter · #39 ·
I definitely get an orange warning icon on the dash (not talking about the little feb icon turning yellow at top of screen, it does that too), this is a strange looking icon in the odometer where other warnings appear. Screen definitely used the words de-activated too. It has happened pretty much every time I've driven in heavy snow or heavy rain, also happens to a lesser extent in windy weather! So basically not fit for purpose in typical northern UK weather :)
@TJ16 That is a common problem, and it's when the forward facing radar can't cope with the additional data created due to the fast flow of snow/heavy rain etc past the sensor. It is not a "fault" it's just a poor system The problem @mike-b is having is quite different, where the system randomly fails even without the added data caused by precipitation.
No, that sounds like TJ16 is having the same problem that I am! The FEB icon turning orange (temporarily) is what happens when the radar gets obstructed/confused and the it turns off (typically for a few minutes until it re enables itself). You get a quick message on the display, where it says something along the lines of 'FEB obstructed'. This is 'normal' behaviour and a limitation of the system. I've only seen that happen 3 or 4 times.

The problem/fault that I have (and it appears TJ16 is seeing too), is a message comes up saying 'FEB de activated', and a big orange warning symbol comes up in the middle of the rev counter. And when it comes on, it stays on, the only way to make it go out again is by turning off the engine and restarting. It's as per the attached photo - but ignore the other warning lights - they are other faults I've had, and don't come up anywhere near as often since the dealer fiddled with it last time!

The orange FEB fault light is definitely a fault with the system - I demonstrated it to the technician on a test drive yesterday and he agreed that it is definitely not normal. I can make it happen by driving down a long hill with prolonged braking. In fact, I think that's the only time it ever happens, and there are certain hills I can drive down near my home where it happens 50% of the time. Wonder if it happens to TJ's Nav on long descents too?

I know the FEB can be deactivated from the menus, but I don't want to do that:

1) Because deactivating it makes the same orange warning light stay on permanently - I don't want my dashboard lit up like a Christmas tree with fault lights!
2) One day the FEB might actually be useful if it saves me from a collision (not that I have a habit of rear ending other cars).
3) If I ever did have an accident, I can't imagine my insurance company would be very impressed if they found out that I'd deactivated one of the active safety systems that may have prevented it.
4) It's a fault on a brand new 30k motor, and I want it fixed, don't think that's asking too much!

As for the auto headlights (there's already a thread on them, you're not alone: http://www.nissan-navara.net/61-technical-assistance-np-300/90961-auto-lights.html), you can alter the sensitivity of them in the menu system, but I've found that even the least sensitive 'on later' setting doesn't help much. My solution is to leave the sidelights on all the time (except when you actually want the headlights, and then you turn them on manually). This has two effects - it over rides the auto function of the headlights, and it dims the DRLs down to side light brightness, so a win/win solution! The sidelights turn of automatically when you stop the engine, so it's completely unobtrusive - you don't need to remember to turn them on/off yourself, just leave the switch in the sidelight position.
 

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Hi mike-b, we don't generally have too many long descents in Lincolnshire but as it happens we do live on the edge of the Wolds (range of low hills), our house is halfway up a hill. I would not call it a big hill compared to those in Devon but it is a gradient nonetheless so you may have a point. Also the quickest route from my house to the motorway involves a quarter mile long 1 in10 climb/descent. To be honest I can't recall if the warnings was thrown at the time I was going down it. I will pay more attention next time.

And yes, I've been switching to side lights to prevent headlights coming on in daytime.
 
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