Heater getting barely warm

[iLikefishing]

Anyone had a problem with the heater not getting hot in there S1 ? Now winter is here I've noticed my heater is barely getting warm after 10-11 mile journey to work

 

[Phazer]

Potentially a failed motor on the climate system. Can you get it scanned with VCDS as it should tell you which one if that's the case?

Hopefully not the failure requiring dash out!!

 

[iLikefishing]

I really hope it doesnt need the dash out as that seems like a big job in small space, which usually means expensive, I will get it scanned to see if that shows what the issue is, I only have the analogue AC not dual zone climate if that makes any difference, I've read a few things online about a bag of silica possibly bursting and blocking the matrix, no idea if mine has one of these but I suppose checking will be a good idea, cheers Phazer

 

[Baz999fire]

I really hope it doesnt need the dash out as that seems like a big job in small space, which usually means expensive, I will get it scanned to see if that shows what the issue is, I only have the analogue AC not dual zone climate if that makes any difference, I've read a few things online about a bag of silica possibly bursting and blocking the matrix, no idea if mine has one of these but I suppose checking will be a good idea, cheers Phazer

Hi, the bag of silica is in the coolant reservoir and it has been known for this to burst and the silica granules block the heater matrix. Think this bag of silica is meant to prolong the life of the coolant. I removed mine - took a couple of minutes. And would rather change the coolant more often than risk a blocked heater matrix. Best of luck.

 

[iLikefishing]

My mechanic friend is going to scan my car this week and hopefully that will help, I removed the bag of silica from the header tank but it had no signs of bursting or leaking, blowers are luke warm after 10-12 miles, it used to be mad hot before

 

[Phazer]

hmm what's the engine temp doing? Could be a sign of a failed thermostat. Thermostat/water pump failure is an EA888 engine speciality after all.

 

[iLikefishing]

I had the water pump replaced about 3 years ago with an INA unit, engine temp rises to 90 after a mile or 2 and stays at that all the time, I'm guessing the matrix is blocked

 

[Phazer]

I had the water pump replaced about 3 years ago with an INA unit, engine temp rises to 90 after a mile or 2 and stays at that all the time, I'm guessing the matrix is blocked

Yeah sounds like the thermostat is all good. Could be a blocked matrix, pretty sure it's a dash out job to replace so worth attempting a flush out first.

 

[iLikefishing]

My friendly mechanic says there is a valve and a secondary water pump as well as the matrix, still hasn't plugged his box of tricks in though to check for and codes and if the flap motors are working etc.

 

[iLikefishing]

I'm totally flummoxed, my car had no error codes when checked and over the last few days my heaters have started working again, maybe not quite as good as they were but I now have warm air

 

[iLikefishing]

Some very cold mornings lately, heaters barely working at all, I'm thinking it's got to be the thermostat, hoping to get at it with just the centre console out, thinking a haynes manual or similar might help

 

[iLikefishing]

Meant matrix in that last post not the thermostat