Hi.

Renault master 2.5dci 120 54 plate

When I turn my key to 'accessory' position the stop and battery lights flash together on the dash, sometimes after 10seconds or so.

When the ignition starts, the lights go out.

This has just happened after I've picked the van up after mot, where it had electric window and light cluster contacts cleaned up after minor faults.

Is this a coincidence or symptomatic of another issue like low battery or ageing alternator?

Thanks.