Did you fix it 

Edited 27 April, 20197 yr by Richieb81

Ok latest update is I replaced the Battery and the ECU relay with a brand new ones however still the same problem 😭

...Sorry to hear this and I cannot offer a solution, either. 

However, regarding a flat battery making a car stall... I can categorically state that, YES this can happen. Might not have been your issue but I have had a flat battery make a car grind to a halt due to loss of electrical power, many years ago, whilst returning home from a 30 mile drive. I got around half way home and the car just stopped. o be fair, this was at night, with lights on etc and the underlying cause was the alternator, failing to charge the battery up so the battery eventually drained fully until... Nothing! I had to buy a new battery from a garage, fit it, drive home and next day, get the alternator replaced. I also recharged the new battery as it was obviously being drained for the rest of the drive. I kept all power to the lowest possible usage for the rest of the drive.

I have heard of people starting a car and then removing the battery and driving it to say, a scrapyard, etc but this would be in daylight and without extra power usage. Your car will almost certainly have electric assistance to the steering, along with the ecu, etc so a semi flat battery is almost junk. You said you did not want to remove and charge/buy a charger but I fear these are actually MORE needed now, then ever! 

I used to get by on borrowing c charger, then bought a cheepie, upgrade, now own a £60 smart charger, along with a smaller, more gentle one for the motorcycle, which can be left on indefinitely. (Battery tender). I really could not do without one and would recommend anyone with a car etc, to have access to one. I also charge up the battery every three to six months, just to ensure it stays fully charged as often, bit by bit, they get less charged and become weaker.

 

I find my three cylinder diesel needs a good, strong battery, as does my V2, 1100cc bike. Big pistons need more force to move!