Why is my cabin heater not working in my sprinter?
Extending a finger inside the square fresh air ducts and hooking it back to the cabin, you will find a small section of plastic housing missing. This enables you to actually touch the heater matrix element – on the left and right sides these were cold! – even though the flow and return pipes were boiling hot.
How long does it take to replace a Mercedes Sprinter heater?
The heater box itself then has to be split into two halves to replace the heater matrix inside. That can take anywhere between 8 to 10 hours to complete, we did not have the time available and the van was due out in a short number of hours.
Why is my Mercedes Sprinter not getting hot water?
A great deal of the heating of the matrix is mainly by conduction in the heated water down through the matrix tubes beneath the header. Install the newly flushed heater matrix, refill the coolant system and test your repair, the matrix should now be evenly very hot all over its surfaces and not just the top header section.
What kind of coolant does a sprinter use?
This particular van had the diesel-fired coolant ‘pre-heater’ removed (ESPAR) from the front left inner wing and all the steel pipe bypassed, as it had started to rot and leak in several places. This is quite common on older Sprinters and this steel rigid pipework runs mostly out of sight behind the bodywork, up above the heater blower housing.
Extending a finger inside the square fresh air ducts and hooking it back to the cabin, you will find a small section of plastic housing missing. This enables you to actually touch the heater matrix element – on the left and right sides these were cold! – even though the flow and return pipes were boiling hot.
A great deal of the heating of the matrix is mainly by conduction in the heated water down through the matrix tubes beneath the header. Install the newly flushed heater matrix, refill the coolant system and test your repair, the matrix should now be evenly very hot all over its surfaces and not just the top header section.
This particular van had the diesel-fired coolant ‘pre-heater’ removed (ESPAR) from the front left inner wing and all the steel pipe bypassed, as it had started to rot and leak in several places. This is quite common on older Sprinters and this steel rigid pipework runs mostly out of sight behind the bodywork, up above the heater blower housing.
The heater box itself then has to be split into two halves to replace the heater matrix inside. That can take anywhere between 8 to 10 hours to complete, we did not have the time available and the van was due out in a short number of hours.