heater problem

[oldgit]

i have a 2009 smart 451 cabrio '
have a problem regards the heat coming out my heater , sometimes its hot , then other times it blows cool .
ive flushed the system &; also checked that there is no airlocks .
i have a turbo gauge fitted which gives me different reading regard the engine & it shows my temperature as 87 which is normal engine temp after engine warms up ..
my independent smart repairer says the thermostat is working ok
myself i would like to change the thermostat as the smart as now done 95 thousand miles & they are known to stick or play up
but thats a last measure as ive been told that the thermostat is in a awkward place & you need to drop the engine ..

the smart has just passed the M.O.T ok , with one first time advisory regards a worn front engine mount which is now done ..

thankyou all .

tony / oldgit

[10:45PM]

The 451 suffers from a dodgy 'temperature setting' control....

When it's next blowing cold when you're expecting hot , try cycling the temperature control from cold back to hot again and report back ... if it's the control at fault it will revert to hot blowing pretty much instantaneously

[tolsen]

There is a good description of the controller fault on Evilution. Search "451 Heater Faults".

[oldgit]

thanks , 10:45PM & tolsen regards your advice .

as a subsciber to evilution ive now looked up " 451 heater faults " on thier site .

looks like that is the problem im having .

will get my independent smart repairer to sort it out for me ..

tony / oldgit