Deano12 Posted February 8, 2019 Share Posted February 8, 2019 Hi all, Just wondering if anyone else has had it where stop start just doesn't engage no matter what? I've got a new battery so it can't be that. Not sure what else it could be? Mk3 focus. Sent from my SM-G955F using Tapatalk Quote Link to comment Share on other sites More sharing options...
iantt Posted February 8, 2019 Share Posted February 8, 2019 Have you got the right type of battery , and was the BMS reset when the battery was fitted? Quote Link to comment Share on other sites More sharing options...
pcaouolte Posted February 8, 2019 Share Posted February 8, 2019 Had mine for about 30 months. I live in a flat area of Lincolnshire and travel about 1000 miles a month. The stop/start only works when I have been on holiday to a hilly area. It will then work for a few days when I get home. It hasn't activated since last October. The battery is still the original (6 years old). I don't plan to change the battery whilst it still starts the car reliably. Quote Link to comment Share on other sites More sharing options...
isetta Posted February 8, 2019 Share Posted February 8, 2019 I wish my stop/start would disable itself permanenly. I hate it. Quote Link to comment Share on other sites More sharing options...
WES180 Posted February 8, 2019 Share Posted February 8, 2019 I forgot I had it it's been off that long!😂 Quote Link to comment Share on other sites More sharing options...
Deano12 Posted February 8, 2019 Author Share Posted February 8, 2019 Well the battery was new from the dealer (non ford) when I got her. Not sure if things have been reset or not.When I press the button to turn it off am I meant to get a notification on the dash saying so? As I don't. Sent from my SM-G955F using Tapatalk Quote Link to comment Share on other sites More sharing options...
iantt Posted February 8, 2019 Share Posted February 8, 2019 Nope, just the button illuminates when you switch it off. I would take a photo with the details of the battery and post up so we can see what battery it is. Quote Link to comment Share on other sites More sharing options...
Deano12 Posted February 8, 2019 Author Share Posted February 8, 2019 Nope, just the button illuminates when you switch it off. I would take a photo with the details of the battery and post up so we can see what battery it is. Ok thanks. Will have to do that in the morning :)Sent from my SM-G955F using Tapatalk Quote Link to comment Share on other sites More sharing options...
mjt Posted February 8, 2019 Share Posted February 8, 2019 33 minutes ago, WES180 said: I forgot I had it it's been off that long! Me too. The only time it's worked was after I'd had the battery on the charger, but like Isetta I prefer it not working so I haven't bothered trying to reset the BMS. Quote Link to comment Share on other sites More sharing options...
Deano12 Posted February 8, 2019 Author Share Posted February 8, 2019 Me too. The only time it's worked was after I'd had the battery on the charger, but like Isetta I prefer it not working so I haven't bothered trying to reset the BMS.Can someone enlighten me as to what the BMS is and how I reset it? (Just in case) Sent from my SM-G955F using Tapatalk Quote Link to comment Share on other sites More sharing options...
YOG Posted February 8, 2019 Share Posted February 8, 2019 As I understand it: battery Monitor Reset (BMS): Press and release the Start/Stop Engine Button to switch the ignition on (do not press the clutch pedal). Wait for 10 seconds. Press the Rear Fog Light Switch 5 times (not 5 times on and off), then the Hazard Light Switch 3 times (not 3 times on and off). Wait for approximately 10 seconds, after which the Instrument Cluster battery Icon should flash. Press and release the Start/Stop Engine Button to switch the ignition off (do not press the clutch pedal). 1 Quote Link to comment Share on other sites More sharing options...
Deano12 Posted February 9, 2019 Author Share Posted February 9, 2019 As I understand it: Battery Monitor Reset (BMS): Press and release the Start/Stop Engine Button to switch the ignition on (do not press the clutch pedal). Wait for 10 seconds. Press the Rear Fog Light Switch 5 times (not 5 times on and off), then the Hazard Light Switch 3 times (not 3 times on and off). Wait for approximately 10 seconds, after which the Instrument Cluster Battery Icon should flash. Press and release the Start/Stop Engine Button to switch the ignition off (do not press the clutch pedal).Thanks. And what does resetting that do? Will it hurt to just do it anyway? Sent from my SM-G955F using Tapatalk Quote Link to comment Share on other sites More sharing options...
TomsFocus Posted February 9, 2019 Share Posted February 9, 2019 1 hour ago, Deano12 said: Thanks. And what does resetting that do? Will it hurt to just do it anyway? Sent from my SM-G955F using Tapatalk It just allows the battery monitor to learn the state of the charge of the new battery. Obviously stop/start puts strain on batteries so the monitor needs to know hw low it can let the battery drop before disabling the stop start again. It won't hurt to do it. I must admit, I'm surprised so many people are saying theirs doesn't work, I do very few miles myself but mine's worked perfectly on both a 40k/6 year Focus and a 100k/6 year Golf (original battery on both afaik). I did have to reset the BMS on the Focus when I bought it as it had been sat for months unused, but after that it was fine. It's rare that mine doesn't activate tbh! Quote Link to comment Share on other sites More sharing options...
Deano12 Posted February 9, 2019 Author Share Posted February 9, 2019 It just allows the battery monitor to learn the state of the charge of the new battery. Obviously stop/start puts strain on batteries so the monitor needs to know hw low it can let the battery drop before disabling the stop start again. It won't hurt to do it. I must admit, I'm surprised so many people are saying theirs doesn't work, I do very few miles myself but mine's worked perfectly on both a 40k/6 year Focus and a 100k/6 year Golf (original battery on both afaik). I did have to reset the BMS on the Focus when I bought it as it had been sat for months unused, but after that it was fine. It's rare that mine doesn't activate tbh!Thanks. I'll give it a go later today if I get chance. Sent from my SM-G955F using Tapatalk Quote Link to comment Share on other sites More sharing options...
iantt Posted February 9, 2019 Share Posted February 9, 2019 Mine works in 4.5 yrs I've had mine, and original battery. Quote Link to comment Share on other sites More sharing options...
iantt Posted February 9, 2019 Share Posted February 9, 2019 Just now, Deano12 said: Thanks. I'll give it a go later today if I get chance. Sent from my SM-G955F using Tapatalk Don't forget to let us know what battery it has. Quote Link to comment Share on other sites More sharing options...
Deano12 Posted February 9, 2019 Author Share Posted February 9, 2019 Don't forget to let us know what battery it has. Yeah will do. Thanks buddy. Sent from my SM-G955F using Tapatalk Quote Link to comment Share on other sites More sharing options...
iantt Posted February 9, 2019 Share Posted February 9, 2019 1 minute ago, Deano12 said: Yeah will do. Thanks buddy. Sent from my SM-G955F using Tapatalk My betting is the wrong battery or BMS wasn't reset after. Quote Link to comment Share on other sites More sharing options...
Deano12 Posted February 9, 2019 Author Share Posted February 9, 2019 Ok so I managed to successfully reset the BMS. Haven't had chance to test that yet though. Here's also the battery. Sent from my SM-G955F using Tapatalk Quote Link to comment Share on other sites More sharing options...
Deano12 Posted February 9, 2019 Author Share Posted February 9, 2019 Ok so I managed to successfully reset the BMS. Haven't had chance to test that yet though. Here's also the battery. Sent from my SM-G955F using Tapatalk And I don't know why but the image quality is rubbish... looks like tapatalk screwed that up. Sent from my SM-G955F using Tapatalk Quote Link to comment Share on other sites More sharing options...
iantt Posted February 9, 2019 Share Posted February 9, 2019 Well if I could read the sticker it would help, but looks like the right battery by the general colour of sticker!! Lol Also that don't look like a new battery. Quote Link to comment Share on other sites More sharing options...
Deano12 Posted February 9, 2019 Author Share Posted February 9, 2019 6 minutes ago, iantt said: Well if I could read the sticker it would help, but looks like the right battery by the general colour of sticker!! Lol Also that don't look like a new battery. Let's try this way Quote Link to comment Share on other sites More sharing options...
Deano12 Posted February 9, 2019 Author Share Posted February 9, 2019 Also it doesn't look like a new one you're right. I was told it was but never checked until today. Unless it a recycled one out of another car? Sent from my SM-G955F using Tapatalk Quote Link to comment Share on other sites More sharing options...
TomsFocus Posted February 9, 2019 Share Posted February 9, 2019 It works if you click on the image to enlarge it. Quote Link to comment Share on other sites More sharing options...
iantt Posted February 9, 2019 Share Posted February 9, 2019 Well it's the right battery, the BMS reset should kick it into life Quote Link to comment Share on other sites More sharing options...
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