STOP/START ERROR ON DASH PANEL
- Thread starter Roman Mac
- Start date
Thanks for that advice. I'll check mine out mate
Thanks for that. I checked mine but no loose wires were present. I took the tape off the wires leading into the battery sensor and this is what lurked beneath it. On closer inspecton it looks like the plastic insulation around the red wire is broken, but not the wire itself.
I replaced the glow plugs and the STOP/START ERROR still shows when switching on the ignition, so that kinda rules out the plugs as the cause of the stop/start error still showing, so now I'm thinking it's battery/sensor related. Any advice would be welcome, thanks!
Did the new battery need coding to the van?
Not as far as I know. I just swapped it over. I did ask a mechanic about that and he said no it shouldn't need to be coded. Could this be the cause of the stop/stat error? And do they have to be coded to the van?
Possibly, don't really know. Maybe just on newer vans.
Theoretically the battery should be coded when it is changed. However anecdotally if it is not coded it sorts itself out after a few weeks, so in your case I don't think coding it would help - unless you have replaced the battery with one that is way smaller than required.
I changed it spec for spec. Made a howler in choosing a Lion battery from Euro. Reviews were ok, but I've been told they're a pile of 5h1te. Trusty mechanic said I need a Bosch battery biggercthan what I've got and one that will fill the compartment. Apparently they're 380 kwid, which is splendid news! Lol
Well there we go, mines showing stop start error now as well, standard battery, had it disconnected for 8 hours today, haven't driven it long enough to warm up yet so hopefully it'll go off.
Yes, the battery "should" be coded.
Yes the ECU slowly will "learn" that you have a new battery and will adapt.
But still thinking that you have a battery with the characterics that are currently coded in. I particular, if your battery is really different (i.e. AGM vs EFB or plain Lead Acid) this learning phase will take long or will never happen.
Until your ECU doesn't "think" your battery is fully OK according to what it has coded inside, it will keep your start /stop disabled for precaution.
My Bus was parked 6 month outside at the dealer before it found a lucky buyer (me) and I don't know what they did with the battery meanwhile. But it took a couple of weeks or a few hundred Km driving before it started to work. The battery was and still is otherwise working perfectly.
Not that I care of S/S. I disable it every time I remeber, another greenwashing bad idea. So your mechanic is somehow correct, for start stop you need a tip top battery like the Bosch. BTW, FWIK the Bosch is actually a rebranded Varta product, which usally costs less to end user. If you have a Bosch I think you will have to code it as a Varta anyway. The ECU knows a limited number of brands. Or there is a type code, but that often is missing from off the shelf (non OEM) stuff. You can code your battery yourself with VCDS or OBDeleven if your mechanic is not willing to do it. There are tuturials on the web. Maybe your Lion is actually good enough. I would make a try to code it correctly before giving that outrageous amount of money for the Bosch.
Yes the ECU slowly will "learn" that you have a new battery and will adapt.
But still thinking that you have a battery with the characterics that are currently coded in. I particular, if your battery is really different (i.e. AGM vs EFB or plain Lead Acid) this learning phase will take long or will never happen.
Until your ECU doesn't "think" your battery is fully OK according to what it has coded inside, it will keep your start /stop disabled for precaution.
My Bus was parked 6 month outside at the dealer before it found a lucky buyer (me) and I don't know what they did with the battery meanwhile. But it took a couple of weeks or a few hundred Km driving before it started to work. The battery was and still is otherwise working perfectly.
Not that I care of S/S. I disable it every time I remeber, another greenwashing bad idea. So your mechanic is somehow correct, for start stop you need a tip top battery like the Bosch. BTW, FWIK the Bosch is actually a rebranded Varta product, which usally costs less to end user. If you have a Bosch I think you will have to code it as a Varta anyway. The ECU knows a limited number of brands. Or there is a type code, but that often is missing from off the shelf (non OEM) stuff. You can code your battery yourself with VCDS or OBDeleven if your mechanic is not willing to do it. There are tuturials on the web. Maybe your Lion is actually good enough. I would make a try to code it correctly before giving that outrageous amount of money for the Bosch.
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I suspect the only relavant thing for coding is the Amp Hour rating, even though it can be coded for battery manufacturer and serial number.
If the amp hour rating of the new battery is the same as your old battery then it is probably OK?
At least two other things:
Technology: i.e. AGM vs others (charge voltages ARE different).
Serial Number: it needs only to be different. A different SN will tell the ECU that it is a new battery and the learning phase will be easier and shorter.
I suspect that there are others too i.e. EFB type (like mine OEM Exide) is condered plain Lead Acid, but from the code it can guess it, and again, learn faster how to handle it. S/S and smart Alternator is complicated and antil the ECU is not happy it will not give you back the S/S. Not a VW thing only same on Mercedes.
Drove it half an hour, stop start error gone and it's working again.
Hi
I have a T6 2017. I installed a new Yuasa 800Ah stop-start battery in Nov 25 and the stop-start is intermittent (as was the battery I replaced). Had battery tested today while in for MOT, and the battery health is just 56%. Mechanic says battery is defective. Question is, is that because I didn't have the battery BMS programmed or is it a manufacturing defect?
Thanks for any thoughts
Andrew
I have a T6 2017. I installed a new Yuasa 800Ah stop-start battery in Nov 25 and the stop-start is intermittent (as was the battery I replaced). Had battery tested today while in for MOT, and the battery health is just 56%. Mechanic says battery is defective. Question is, is that because I didn't have the battery BMS programmed or is it a manufacturing defect?
Thanks for any thoughts
Andrew
Is the van starting ok? with enthusiasm?
I wouldn't worry about it.
Actually, the SOC should be around 80% on a stop start system. Is your trickle charger "Smart" and not overcharging the battery? Also the "Battery health" tests are notoriously un-reliable and are better taken over a longer period with a good quality instrument. A snapshot test can have lots of variables that can produce a poor reading. It's up to you, but I wouldn't sweat it. You're worrying over data from one test without any accompanying symptoms. If you hadn't had the test done, you'd be non the wiser.
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