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Post by Feng on Jan 18, 2017 10:20:41 GMT 11
Anyone else have their A/C cut out on them on hot days? Mine seems to work 3/4 of the time, then the compressor decides to take a break while I get nothing but warm air. Two or three minutes later it works again for a few minutes. Leaf Spy gives me some error codes so hopefully they can make sense of that when I take it in for service tomorrow.
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Post by rusdy on Jan 18, 2017 12:33:00 GMT 11
Ouch, how hot is your 'hot days'? My worst scenario to date is turning the A/C on while parked in 44C hot day for half an hour (as shown on the dashboard temp). No drama back then though.
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Post by stewartm on Jan 18, 2017 13:01:33 GMT 11
Using it daily at the moment, wish this heatwave would go away. Cant think its doing any good for my main battery.
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Post by Feng on Jan 18, 2017 13:31:56 GMT 11
Ouch, how hot is your 'hot days'? My worst scenario to date is turning the A/C on while parked in 44C hot day for half an hour (as shown on the dashboard temp). No drama back then though. Mine were low 40s so it must be a problem with my car. Hope it's fixable! It's definitely unpleasant to have an intermittent A/C.
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Post by jake on Jan 19, 2017 0:20:47 GMT 11
Sounds like something is overheating. Any warning lights? Anyway it's definitely a trip back to the dealer. Could be many things. Coolant leak, fan failure. I don't pretend to be an expert on these things, however I had a similar issue in an ICE car and it was due to a faulty thermostat. Nothing like that needed in the Leaf of course, but there must be overheat protection. Then the compressor shots down, it cools off and then restarts until it overheats again. It will be interesting to see what it was.
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Post by 4wardthinking on Jan 19, 2017 10:02:12 GMT 11
One of the fan speeds is not working, or obstruction. You'd get refrigerant under pressure alarms otherwise. Our LEAF was out all the 40*+ days, and no issues at all, the interior was like a fridge. Warranty claim?.
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Post by Feng on Jan 19, 2017 12:01:09 GMT 11
Out of warranty now. I did check the fans and they're blowing. Here's what Leaf Spy reports. I got to chat with the mechanic working on my car and tried to explain it to him. He gave me a creative story about how newer Nissans use "high speed" CANBUS and older OBDII devices can interfere and give false readings. Rather coincidental that mine is giving A/C compressor errors while my air conditioner is intermittent. SJN also don't have the correct equipment and supplies to service LEAF air conditioners so I'll have to take it to an A/C specialist who can service hybrids and EVs. Attachments:
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Post by 4wardthinking on Jan 20, 2017 16:35:14 GMT 11
I'd call Nissan HQ, and have a chat with the LEAF team there. Having Consult 3+, and being able to use it may be separate.
You mentioned you had a bit of a broken nose on your LEAF at one time in the past, and I'm wondering if the car had a leak at that time?. It's a distinct possibility that the correct way to re-gas after repair wasn't quite as it should be. The LEAF uses high, medium and low speed CANBUS, but as a general rule, the high speed data bus is reserved for safety and handling processing, the CAN for the A/C I believe is low processing priority, and would be low speed ancillary control. The data gathered by the LEAFSPY software is gathered by listening & converting against a reference table, which is standard issue from Nissan as part of an international agreement, and the comms used have no bearing on it, The CANBUS data is very difficult to un-pick, especially when it comes to the medium speed network, which is control systems.. and a highly guarded secret. Consult software can!! Be obtained, but getting the car to talk to it is much more of a problem.
So, as the OBD & CANbus are different in one way, the standard agreed upon gave opportunity to non-Nissan service centers a chance to rectify the "average" problem, and the owner a chance to shop around when it came time for service or problem resolution. Manufacturers did however, reserve the right under this agreement to more "in depth" communication citing that others wishing to copy their technology would have difficulty if certain aspects were not publically available.
It's all acedemic in reality, as most manufacturer software has been opened independently. It does however stop the average spanner monkey causing damage, or more importantly compromising safety and security aspects, which the media may!! wish to reveal in an unscrupulous manner.
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Post by duncan on Feb 5, 2017 8:46:39 GMT 11
Hey Matt, we've also had the AC fail on a hot (40+ day)
Was driving along with AC and Auto on, noticed it wasn't getting cold. Checked power use and there was nothing drawn on the climate control.
Stopped, turned of car for a few minutes, restarted and everything was fine.
We have a service booked monday week and will get it checked out, I'll have a look at DTCs today too.
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Post by Feng on Feb 5, 2017 10:30:36 GMT 11
Thanks Duncan, I actually feel better knowing I'm not alone. Did you get any troubleshooting codes? I'm still looking out for someone who can at least check the refrigerant. Some of the steps in the service manual are very daunting, involving isolating the battery pack and dismantling the A/C compressor to check/replace the lubricant. Maybe the SJN mechanic was hesitant to do anything about it because he knows it could potentially be a big job.
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Post by duncan on Feb 5, 2017 15:33:17 GMT 11
Yeah I've got 2/3 AC codes you have too. If there is some sort of failure I think it is minor.....2 cars out of 200 having an overheat once? Anyway, we'll see if nissan find anything
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