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Discussion Starter #1
Hi, I have recently purchased a PHEV gx4h and it has no heating.
Air con and fan blowers all work fine.
I had a little look around and all of the fuses and relays are working.
I found what I believe to be the heat pump and there is one feed pipe to it that has what looks like a filter inline.
After I removed this pipe and returned it, the heater started working for about 5 minutes and has now returned to blowing cold air again. (this is with the battery plugged in to my rolec charger, so it's not a low battery issue)

Has anyone else had issues or does anyone have any ideas what the problem could be or what fixes are available?
 

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There is a problem with the filter in one of the coolant hoses becoming blocked with sediment. 7805a744 is the part number of the replacement hose, and coolant will need changing aswell
 

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richi.uk
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I know of several cars where the filter has got blocked—apparently with block casting sand—but very few cases where cleaning the filter has worked. You probably need to replace the filter.
 

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Discussion Starter #4
There is a problem with the filter in one of the coolant hoses becoming blocked with sediment. 7805a744 is the part number of the replacement hose, and coolant will need changing aswell
do you know how easy this is to do as a DIY job? are there any other posts showing 'how to'?
 

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Discussion Starter #5
There is a problem with the filter in one of the coolant hoses becoming blocked with sediment. 7805a744 is the part number of the replacement hose, and coolant will need changing aswell
I've just had a look at the part number you suggested and they're for 2018+ cars. mine is a 2014. do you know if it's a different number?
thank you for your help.
 

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This is for all PHEV models. They came out here in AUS in 2014.5, and this pipe is the replacement for the early ones. Maybe the number is different for other markets. I have replaced a few of these, all with no dramas.
 

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Discussion Starter #8
Yeah, check the info in the UK Facebook group's #FAQ: Log in to Facebook | Facebook
TBH I hadn't thought of facebook having instead searched several forums for an answer.
24 hours later and after reading Paul Masons write up I'm hoping the heating is fixed. the filter was clogged but not fully blocked. a thorough clean and the heat seem much better than before. I wont really know how successful it's been until the temps drop and it really has to work.
 

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Hi,

I have 2015 Gx4h model bought 2017. Bought in September and in winter noticed minimal heat coming through. Took it to dealer who after two days said the matrix was blocked, they flushed it and it started working (not great heat but could survive). However, now it’s blowing complete cold air. Took it to Mitsubishi and after diagnosis said the
 

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Need help!

I have a 2015 registered Outlander gx4h. Since I bought it in 2018, I noticed the heating was very poor. Took it to the dealer and they said it was a block in the heater matrix valve. They flushed it and it’s been working okay but not to its full heating potential. Now it totally stopped working, it just blows cold air. Took it to dealer for diagnostic and they said it needs PTC heater, heater matrix, 2 x Ac pipe sills and gas, in line coolant filter, electric water pump and 4 way valve. They quoted just over £5000 for the job. The mechanic said this is a very common fault with these cars. I feel it’s a total rip-off. I can’t justify spending £5k on a problem that is common to these cars. Any help or advice would be most graciously welcome. I’m in London.
 

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Need help!

I have a 2015 registered Outlander gx4h. Since I bought it in 2018, I noticed the heating was very poor. Took it to the dealer and they said it was a block in the heater matrix valve. They flushed it and it’s been working okay but not to its full heating potential. Now it totally stopped working, it just blows cold air. Took it to dealer for diagnostic and they said it needs PTC heater, heater matrix, 2 x Ac pipe sills and gas, in line coolant filter, electric water pump and 4 way valve. They quoted just over £5000 for the job. The mechanic said this is a very common fault with these cars. I feel it’s a total rip-off. I can’t justify spending £5k on a problem that is common to these cars. Any help or advice would be most graciously welcome. I’m in London.
Just read your comment and just recently took my car to the Mitsubishi dealer and what you have wrote is exactly what they have quoted to me what needed to be replaced and the same price £5,000 did a diagnostic for £156 flashed it through and it seems to be working but for how long who knows if this is a common fault with Mitsubishi I think they should do a recall
 

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Just read your comment and just recently took my car to the Mitsubishi dealer and what you have wrote is exactly what they have quoted to me what needed to be replaced and the same price £5,000 did a diagnostic for £156 flashed it through and it seems to be working but for how long who knows if this is a common fault with Mitsubishi I think they should do a recall
Hi Kevin, I'm glad at least the flushing of teh system restored your heating, but your right in that how long will it last. I agree with you that Mitsubishi should do a recall if this is a prevalent issue with Outlanders. The dealers are quick to quote an exorbitant price for something that should work in any car. In my case, I found a local mechanic who has dealt with issues on heating for Outlanders. he said it is not an elctrical problem rather a mechanical one where the valves in the 4 way valve unit is not working. He is now trying to get it to work and if not then he says replacing this will definitley solve the problem. The 4 way valve from Mitsubishi costs around £338, I will wait and see what he says and if necessary change this, at least this way won't have to fork out 5K!
 

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Hi All,
@Monsur @Kevin emmins
It seems, I am having same issue, bought Outlander Phev in October (65 Plate) heating was not that great but after a while it completely stopped. Send it back to dealer where we bought it and they done flushing and it started working a bit and now stopped again. It am thinking to take it to dealer, let them check and conclude the issue. But just wonder does not it covered under company warranty? Thank you in advance.
 

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Hi All,
@Monsur @Kevin emmins
It seems, I am having same issue, bought Outlander Phev in October (65 Plate) heating was not that great but after a while it completely stopped. Send it back to dealer where we bought it and they done flushing and it started working a bit and now stopped again. It am thinking to take it to dealer, let them check and conclude the issue. But just wonder does not it covered under company warranty? Thank you in advance.
Hi,
If under warranty, then they should sort it out. If not, they will try and get you to pay for a massive unnecessary job. Mine is now sorted, my mechanic said it was the thermostat housed in the 4 way valve that’s not working which is not allowing the hot water from the engine to go to the heater matrix. He did something to mine for now but advised I eventually get the 4 way valve changed and that will resolve the issue altogether. The 4 way valve cost approx £338 from the dealer. However, one of my concern was when driving in electric mode, will I get heat, luckily this was an unfounded concern because I got heat even whilst driving in full electric.
Good luck.
 
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