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Discussion Starter #1
The electronic brake and slip warning lights have suddenly both come on at the same time.

They stay on even after turning the car off and on again. The car is from 2015, has done 20k miles and I've had it for 3 years without any issues. It drives as normal and I can't hear any noises.

A few days ago I heard a noise which sounded like a nail or something in the front-right tyre, but I couldn't see anything in the tyre and I can't hear the noise now.

Any thoughts what the issue might be?

132533
 

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No. But as in all EVs when some weird electrical event happens - first check that the 12v DC battery is fully charged. It's amazing how many bizarre things are caused by low voltage there.
 

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Hi I think that light on the left is your low tyre pressure indicator. As you heard a noise from your right front tyre might be worth checking all the tyre pressures ! And yes 12v battery problems are known to put on warning lights So worth a check! Hope this helps
 

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Sit down before reading this but don't panic. ;)

It's best to get a code reader or LEAFSpy Pro onto the car to check, but I'd suspect that it'll be the brake pressure sensor/s by the master cylinder that have failed. This is code C1142 0009, or C1A70 0109 or C1A66 0109 in Nissan land but similar brake pressure sensor codes on generic readers.

The good news is that it's a simple fix. A generic part is about £30 on eBay. Buy one, and plug the electric connector into it first and the fault lights will go away. Note that there are two on the earlier cars (2015 is the cusp), so this check is needed before fitting to identify which is borked. They are a straight screw out/in job, but take normal precautions with brake fluid. :devilish:

Why are you sitting down? The official part number 47240AL500 is about £300 (you should get a discount) from Nissan. :eek:

Good luck. (y)
 

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Discussion Starter #6
The tyres were at about 30psi, so I've pumped them up to 36psi. I still get the same 2 warnings.

I've plugged in the CTEK and it went straight to stage 4. Stage 3 is where it charges the battery to 80%, so this suggests the batter is already above 80% so should be 'okay'.

@dk6780 thanks for the info :) I'm tempted to buy the item you linked to on ebay as it's only £30. I get your point about plugging it into the electronics first to check that the warnings disappear, also to check which of the 2 sensors is broken. I can't find a diagram or video explaining how to replace it, or where it is located, do you know of any guides? I'm not very experienced in mechanics :) Thanks.
 

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Techboy-bit of a misnomer eh? Only kidding, we all have to learn. Check out this 30kW Technical manual
I'll try and keep the manual available for sharing, but had my 70th birthday on Saturday, so it will disappear if/when I fall off the perch!
Cheers Tony.
 

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@Barfly I'm good with computers, so people at work named me Techboy :) I usually leave the mechanical stuff to my dad who likes to play with motorbikes and model planes lol. This fix sounds easy enough though, so I'll attempt it myself!

Thanks for the manual, I've found the information I need. Happy birthday! :)
 

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I don't know of a good video apart from a Norwegian one on an earlier left hand drive car. :rolleyes:


Check out the official instructions.

I'd check the fault codes before spending money. Buy LEAFSpy Pro if you haven't already done so.

Another symptom is a significant reduction in regenerative braking. Have you got that?
 

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Techboy - I just discovered that my linux system dropbox app sends all lower case files, the index requires the prefix to be upper.

Just run this bash script in a linux terminal and it will change the prefixes to upper case so the index works.
Code:
for file in * ; do            # or *.jpg, or x*.jpg, or whatever
   basename=$(tr '[:lower:]' '[:upper:]' <<< "${file%.*}")
   newname="$basename.${file#*.}"
   mv "$file" "$newname"
done
Alternatively I have uploaded a converted file and the new link is here: workshop_manualcaps

Cheers Tony.
 

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Discussion Starter #11
@dk6780 The vid is good and the comments (in English) fit with the issues I have. I'll take it for a drive later to check if there is an issue with regen. I've ordered a LELink OBD-II, I had one years ago but it wasn't very good, it will be nice to have a new one :) I'll get LEAFSpy Pro too.

@Barfly Ah, you're a fellow geek :) Thanks!
 

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@dk6780 The vid is good and the comments (in English) fit with the issues I have. I'll take it for a drive later to check if there is an issue with regen. I've ordered a LELink OBD-II, I had one years ago but it wasn't very good, it will be nice to have a new one :) I'll get LEAFSpy Pro too.

@Barfly Ah, you're a fellow geek :) Thanks!
I started as a TV engineer in the 1960/70's but in the 1990's it became a throwaway society, nobody repairs stuff any more. When I was 50 I went back to full-time uni in Australia for 3 years and got a diploma in System administration and networking, then separately a training qualification and home automation.

125 started the course, I was one of 12 who graduated, my classmates helped me a lot, they used to call me grandad. We'd go to the lecture theatre and the lecturer would say, three weeks ago we did this and this.....the youngsters would scratch their pimply chins and say oh yes. I'd be thinking bloody hell I can't remember what I had for last night's dinner let alone 3 weeks ago!

As usual timed it beautifully, graduated just as the IT bubble burst. So I did the training, ended up teaching a fortnights taxi course for the local taxi firm, found I enjoyed taxiing, used to do it on the week-ends until the great refugee influx from the Horn of Africa happened and the Aussie dole office sent thousands to be taxi drivers.
 

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You've had a varied career! :)

There aren't many safe jobs! I've been doing SAP for 21 years. The first 15 as an SAP BASIS Administrator. The last 6 years I've primarily done SAP Technical Architecture. With cloud technology, much of the administration work (including building/managing networks and servers) is being done increasingly by developers, not system administrators. There is a move towards serverless computing, so there will be even less of a need for system administrators.
 

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You've had a varied career! :)

There aren't many safe jobs! I've been doing SAP for 21 years. The first 15 as an SAP BASIS Administrator. The last 6 years I've primarily done SAP Technical Architecture. With cloud technology, much of the administration work (including building/managing networks and servers) is being done increasingly by developers, not system administrators. There is a move towards serverless computing, so there will be even less of a need for system administrators.
Varied career-yes. I started as an apprentice at RAF Sopley, then moved to tv's. In 1970 I was asked to design and build the PSU for electronic fly killers. I scored a contract to manufacture 1000 a month, that lasted for 6 months before they tore up the contract and sold out to Rentokil for 2m. I'd had a good time, all expenses paid trips round Europe paid off my mortgage before it all went tits up. I was 19 yrs old and had a great start, 5 years before I was living on the streets of Bournemouth escaping an abusive father, vicious mean bastard he was. Did a bit of reprographics service, then to Aussie. State manager Pioneer Electronics, then Radio Rentals head hunted me. Swapped idiots in Melbourne for pratts in London so set up on my own, specialising in projector and video wall systems. My Sri-Lankan partner died then the recession hit so off to uni I went. I became a half share partner in a trailer company, but family and health brought me back to blighty, although I still own half the company, my busines partner is fast running it into the ground, great engineer, useless at business. Did a bit of taxiing here in Christchurch, but fully retired now.
 

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Hi I think that light on the left is your low tyre pressure indicator. As you heard a noise from your right front tyre might be worth checking all the tyre pressures ! And yes 12v battery problems are known to put on warning lights So worth a check! Hope this helps
No - the type pressure warning looks like a flat tyre - that is a brake warning
 

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Discussion Starter #16
@Barfly Wow, that really is varied lol!

@dk6780 LeafSpy Pro gives me this error code:
C1A70 0108 BRAKE Brake Control System BR-160

That's similar to the C1A70 0109 code you mentioned. Is the recommendation still to replace the brake pressure sensor?

The 12v battery is now fully charged and the tyres are at 36psi.

Thanks.
 

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132806


Re-ran LeafSpy, got the codes above, reset them, went for a test drive and they haven't reappeared. So I'll keep an eye on it and see if it happens again. At least I have LeafSpy and the OBD-II now so I can diagnose if anything does happen :) Thanks everyone for the help.
 

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Those three codes are unrelated and point at a failing 12v. I'd suggest getting it load tested just to be sure, and even Halfords can do that.
 
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