Flat battery means ECU/Immobiliser fallout
Discussion
welcome to modern cars 
i have a customer with an 05 merc that comes in regular to have the limp mode cleared on the gearbox, why is it in limp mode? cos the battery drops below 10.5 volt on cranking, still starts perfecty ok but oh no that's not good enough for the merc ECU, it wants it ALL perfect.
Mind you if the tight arse owner would just buy a new frikken battery he wouldn't have to pay me a tenna a pop to get it on the star tester and clear the fault code! i know a battery is £100 but he's been in 4 times in the last 6 months FFS.

i have a customer with an 05 merc that comes in regular to have the limp mode cleared on the gearbox, why is it in limp mode? cos the battery drops below 10.5 volt on cranking, still starts perfecty ok but oh no that's not good enough for the merc ECU, it wants it ALL perfect.
Mind you if the tight arse owner would just buy a new frikken battery he wouldn't have to pay me a tenna a pop to get it on the star tester and clear the fault code! i know a battery is £100 but he's been in 4 times in the last 6 months FFS.
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t and a world of wallet rape!