Hybrid Health Check Failed as part of First interm Service

[Scout117]

Hi All,

 

Recently had my first intermediate service done and the hybrid Battery health check failed.

The exact error received was the system has detected recent clearance of DTCs, DTCs may have been cleared deliberately or if the auxiliary batter has been disconnected.

Now I have never cleared the DTCs myself ever wouldn't even know how to do it. The dealership said could be the Battery had been flat etc so have been asked to complete 500 miles minimum and 2 weeks minimum before coming back for another free hybrid Battery health check.

Now the car is less then an year old. Not sure what a flat battery would do to a car as I have never had an instance where the car would not start so how would have the DTCs cleared ? I mostly do very short journeys so could that be the issue ?

I have a battery charger so just connected it to the 12v battery and it was showing on 40 % charge. 

Any tips as to what to do before I go for the another hybrid battery health check so it doesn't fail again ?

 

Thanks

[RabButler]

Do two or three x hundred mile journeys.

[fred88]

If that's the case it sort of negates the good fuel consumption we get if we have to travel x hundred miles every so often!

[TonyHSD]

Your Battery may need replacement. Voltage drop below threshold is the culprit of clearing the memory. I would say you are lucky to have the car starts and run. Don’t know , perhaps you have rights to push for Battery under warranty replacement. 
Good luck 

[RabButler]

You have to balance the economy against the design of the vehicle. If you only do short trips in a diesel you will get very good economy, but it knackers the DPF, so you have to do some high speed longer journeys to keep it working.  If you have a hybrid you must keep the 12v Battery charged up. Longer journeys every now and then or a Battery charger (not handy if you park on the street). The OP asked for a solution to his particular problem of getting the Battery up to speed in two weeks; I suggested one.

[Mojo1010]

Easiest is to charge the Battery as you already have a charger. No need for driving hundreds of miles in your case. Then perhaps charge once every 2 weeks, some members can better advise on this as I never have to charge a car Battery in all the cars I had owned. 

[Cyker]

The miles stipulated is not to charge the Battery - It's to generate log history in the car so it shows the Battery is in good condition.

If it happens again and you never had to jump-start or manually charge the car, you should push them to investigate as the only time that should happen is if the Battery has been replaced recently, was depleted or if the logs were cleared, none of which you have done (I assume!), and would indicate an issue they should fix.

And definitely don't do short trips regularly in a diesel, you will get terrible mpg and probably knacker the DPF! Diesel engines have terrible efficiency until they reach operating temp. I have first hand experience of this...

 

[Scout117]

Thanks all, Yeah I have never cleared the logs myself. The Battery has also never been replaced nor it was depleted that the car would not start.

The only thing I can think of is that about 6 weeks ago I took my car in to the dealership for the MyT app issue and the DCM recall for which I think they updated the firmware, could it be that they might have cleared the log at the recall when updating the DCM firmware ?

 

Thanks

[Cyker]

That seems plausible as I think they reset the car after the update, but they should have known that then!!

 

[Derek.w]

Its may interest you all that My car was in for DMC update recall XGG78

It had travalled just 79 miles since a new 12 volt Battery was fitted 

all it says under the Hybrid headding is : carry out a hybrid health check.

[Davidhee58]

I had the similar issue before, the health check failed as an error code could not be cleared, and brought the car back to the dealership after ~500 miles driving, the test then passed, in my case, it was possible due to i disconnected the Battery for charging.

[Devon Aygo]

3 hours ago, Scout117 said:

Hi All,

 

Recently had my first intermediate service done and the hybrid battery health check failed.

The exact error received was the system has detected recent clearance of DTCs, DTCs may have been cleared deliberately or if the auxiliary batter has been disconnected.

Now I have never cleared the DTCs myself ever wouldn't even know how to do it. The dealership said could be the battery had been flat etc so have been asked to complete 500 miles minimum and 2 weeks minimum before coming back for another free hybrid battery health check.

Now the car is less then an year old. Not sure what a flat battery would do to a car as I have never had an instance where the car would not start so how would have the DTCs cleared ? I mostly do very short journeys so could that be the issue ?

I have a battery charger so just connected it to the 12v battery and it was showing on 40 % charge. 

Any tips as to what to do before I go for the another hybrid battery health check so it doesn't fail again ?

 

Thanks

Did your dealer carry out an outstanding Recall along with the service ?

 

Edit: I see you mention the DCM recall this would have included a code clear post software update and is likely the cause of the failed HHC, good news is the 500 miles counts from this date/mileage not the service.

[Scout117]

3 minutes ago, Devon Aygo said:

Did your dealer carry out an outstanding Recall along with the service ?

Hi Lee,

 

No The recall was done on the 2nd Feb 2023 and the service was done just now on the 17th March 2023.

Since the recall which was completed on 2nd Feb to the recent service on 17th march I had still only done 200 miles.

 

Thanks

[fred88]

On 3/19/2023 at 7:26 PM, RabButler said:

You have to balance the economy against the design of the vehicle. If you only do short trips in a diesel you will get very good economy, but it knackers the DPF, so you have to do some high speed longer journeys to keep it working.  If you have a hybrid you must keep the 12v battery charged up. Longer journeys every now and then or a battery charger (not handy if you park on the street). The OP asked for a solution to his particular problem of getting the battery up to speed in two weeks; I suggested one.

I wasn't having a go at you, I appreciate your answer was accurate. It was simply an observation and a slight moan. It must be slightly irritating to a low mileage owner to find they they have to do several hundred miles like that. Anyway, apologies if any offence caused, it wasn't intended at you.

[Woofwoof]

I and the same issue at first service despite it having done almost 10k miles and I’d just done a 300 mile trip 2 days earlier

i haven’t yet gotten it back to the dealer cos I’ve been away and been driving a different car for various reasons but I’m making sure to switch it on at least once a week for 30-40 mins

ive only done 250 miles since the service despite being 1.5 months