Unusual starting problems

[39buss]

GS 430. 05reg. 141000 miles. 125000miles Lexus Glasgow history.  My car stood for about an hour in total as the tyre fitters were very busy but come to start after the tyres were fitted it was dead as a door nail. The dash lights were on but faded and the starter sounded like it was clicking. My trusty fitter connected his portable charger and it fired immediately. Travelled about 5 miles to my trusty garage who checked the Battery and alternator which were spot on. I did not charge the Battery and used the car every day but the same thing happened when I stood for about 15 minutes in a car park with the radio on and it wouldn't start, same scenario. After the first incident I had put my spare Battery and jump leads in the boot and again it fired up and I've been using it since.  The car in general, performs excellently. Any ideas please.  Jim.  ps....I have another small issue on which I will start a new thread tomorrow.  Thanks      

[Sherra]

charge properly or change 12v Battery

[Duggie B]

Did your garage do a load test on the 12v Battery ? It could be that a cell or two are faulty and giving up the ghost intermittently when starting load called upon causing the issue you describe. 

[hybridbatterysolutions]

3 hours ago, Duggie B said:

Did your garage do a load test on the 12v battery ? It could be that a cell or two are faulty and giving up the ghost intermittently when starting load called upon causing the issue you describe. 

Sounds very much like a failing 12v Battery to me 39buss. The 450h does not actually have an alternator as such, it has a dc to dc converter which is fed from the HV Battery

[KayCee]

classic symptom of failing 12v Battery change the Battery Dougie or it will let you down in the worse place you could imagine

it will be sods law

[39buss]

That's pretty much unanimous. The Battery looks fairly new but may not be powerful enough as it fits the Battery compartment but is 2" short in height. I'll invest in a new Battery. Thanks for info.

[KayCee]

Yes Jim that will sort it Sorry i Called you Dougie and apolagy to Dougie  i shoud have read it more carefully

Apolagies

Robert

 

[39buss]

No offence taken and I appreciate the feedback which is always very helpful on here.

[ColinBarber]

On 12/28/2021 at 11:29 PM, hybridbatterysolutions said:

The 450h does not actually have an alternator as such

It doesn't, but Jim's GS430 does 😉

On 12/28/2021 at 4:16 PM, 39buss said:

GS 430. 05reg. 141000 miles.