Technical 2016 Fiat 500 Lounge

[Debbiebambino]

Hi everyone,
I am in trouble with my fiat 500 lounge 2016. I have lights on the dash these are hillholder, esp ,engine management light, yellow triangle. I have already replaced mapping sensor, replaced battery 7 months ago start stop not working, put in new brake switch. Yet these lights come and go. I am not loosing power. The code was diagnosed by fiat as a mapping senser issue,it is replaced. It all started as I hadn't driven the car for 12 weeks due to hand surgery they lights came on , and problems since . I drive 20 min to and from work most days . No fiat dealers near me to get a direct diagnoses , I bought the car from Honda garage who contacted fiat directly with the code for mapping senser. A very worried Fiat owner any help be greatly appreciated.
Thank you

 

[A3jeroen]

Do you have a batterycharger? Leave it charging overnight. Even new batteries discharge when not used/charged for a longer period.

gr J

 

[Debbiebambino]

Do you have a batterycharger? Leave it charging overnight. Even new batteries discharge when not used/charged for a longer period.

gr J

Thank you for your reply no unfortunately I don't have a battery charger ,but will look into it ,thanks again for the help appreciate it.

 

[John202020]

Does the car drive normally but with the lights on?
3 months not being driven could be low battery state, try driving a reasonable distance to charge the battery?
Has the car had a replacement engine earth strap?

 

[Debbiebambino]

Does the car drive normally but with the lights on?
3 months not being driven could be low battery state, try driving a reasonable distance to charge the battery?
Has the car had a replacement engine earth strap?

Hiya drives with lights on , the mechanic charged battery up to full, engine earth strap ? No it hadn't that replaced. It had timing belt done and a new sump replacement and a new battery last year ,this was before the lights started coming on. This lead to a map senser and brake light switch replacement all to no avail.

 

[Debbiebambino]

Hiya drives with lights on , the mechanic charged battery up to full, engine earth strap ? No it hadn't that replaced. It had timing belt done and a new sump replacement and a new battery last year ,this was before the lights started coming on. This lead to a map senser and brake light switch replacement all to no avail.

No sluggishness all drives perfect , what I noticed tho was if I don't drive it for a few days , and put car into reverse as soon as I pull handbrake all lights come on. After a few drives all lights go out.

 

[John202020]

The engine earth strap fails at about 6-8 years old, and is a regular item mentioned to replace regardless as its only £5 and can cause all sorts of odd electrical issues not saying its this but it's an essential replacement

 

[Debbiebambino]

The engine earth strap fails at about 6-8 years old, and is a regular item mentioned to replace regardless as its only £5 and can cause all sorts of odd electrical issues not saying its this but it's an essential replacement

Thank you so much , I will get that sorted ,fingers crossed this might be the answer, thanks again for your help appreciate it

 

[steveras57]

Engine earth strap first to check ! then dont assume the battery is ok!- fully charge it and leave overnight, test next morning -needs a MINUMUM of 12.4 volts and 12.7/12.8 is desirable if less than 12.4 probably needs replacing!
If these done and still having issues next check is the rear hatch wiring( check other threads on here to learn more!)

 

[Debbiebambino]

Thank you so so much , I really appreciate all the advice and guidance. Thank you everyone fingers crossed il get this sorted .