[mattykan]

Wondering if anyone has thoughts on my MG3 not starting. Put a new battery in and it was ok for a few days then failed to start again. Battery has retained charge ok. At the 2nd ignition click all the interior check lights come on but on the 3rd click everything goes dead. Any suggestions would be appreciated. It's a 2015 model. Thank you.

Hi,

Welcome to the forum.

Does the car attempt to crank or does all power just go off at this stage?

It could be that the alternator wasn't charging the new battery and the only way to test this is to get someone to give your car a jump start and see if the car can start with either the second battery connected or a using car battery booster.

It could also be that something like the starter system is draining all power/short circuiting and this will need looking at.

Assuming that the new battery has the necessary cranking amps (given that it is new) then a prime suspect would be the electrical systems.

Cheers..

 

[mattykan]

Had non-starting problem yesterday. Called AA, but much time later no solution, except to tow car to nearest MG garage. Today advised that in the well of the car, under the front passenger seat, is a 'DC something or other', but the well is full of water which has 'blown' the item and caused parts to be 'rusty'. Carpets, seats etc need to be removed to fully determine the problem. Advised that a window must have been left open (not to my knowledge) or the door seals have failed. Car is now close to four years old so not covered by warranty. Likely cost to be close to £500, probably plus VAT. Parts not easily available, but three days time is the hoped for solution to problem

It's a known issue with the door seals going hard over time and not stopping any water getting into the car.

See this video for more details:

Cheers..