New heat exchanger

[mavis.d]

Jumped in the car on Monday to drive home to find the from screen covered in thick mist that wouldn't clear and a overheating coolant smell. The water temperature remained normal, after a bit of research the heater matrix seemed the most likely culprit. As it turns out it's not that big a job as it is on normal cars where the heater matrix sits on the inside of the bulkhead in a Boxster it 's on the outside so easy replacement. I expected the matrix to quite expensive OEM £416 or Hella £120. Guess which way I went? Hella, correct.

Anyway this how to swap one out. 

Remove the wiper arms, then the 3 Torx screws on the plastic scuttle

 

At either edge of the windscreen are 2 nuts

 

Disconnect the wiring to heated washer jets and remove the wiper scuttle 

 

in the centre you can see where the matrix is, behind the battery under the membrane 

 

Remove the wiper motor 3 screws,no need to disconnect the wiring just move to one side

 

Disconnect the 2 struts, 3 screws each

 

Clamp the two hoses 

 

Remove the membrane and undo the jubilee clips

 

The matrix is held in by two screws and spring clips 

 

Reverse the procedure to finish off. You may will need to bleed the coolant system after I filled the matrix up with coolant before I put it back in.

 

[Bluepork03]

Excellent "How To"!

Thanks for taking the time to document this and share it. 

[Cromeika]

Hi, replying to a post from a while ago but I tried this and got to the last stage where I was to pull the matrix out.. but the metal bar with the green tape was preventing me from lifting the matrix out.. what did you do to lift the matrix out?

[mavis.d]

On 8/14/2021 at 7:42 AM, Cromeika said:

Hi, replying to a post from a while ago but I tried this and got to the last stage where I was to pull the matrix out.. but the metal bar with the green tape was preventing me from lifting the matrix out.. what did you do to lift the matrix out?

Kmowing me probably just forced it out of the way!