Volvo Climate Control Panel Dead

[Dunker]

I've just had to change the battery on my 2001 Volvo S80 T6. Now the climate control panel is dead. Everything on it - heater controls, heated seats, demister, etc. and also the automatic gear selector indicator light. Absolutely no fuses anywhere blown. According to form it looks like a software problem in the CCM. Volvo are aware (and obviously uninterested unless you buy a new CCM - or if you are lucky get the old one reflashed) and this isn't specific to the S80. Almost all Volvos with the same sort or climate control system are vulnerable. Anyway, has anyone had experience of this and knows what MCU etc. is in the module - I need to strip mine down this weekend. Any sensible suggestions? - and I have tried all the usual remedies. Are these CCM modules easily swappable - ie. don't need coding in.

[Nicko_d]

You have only one way:
1. Find ECU the same year Cars may use S60-V\XC70-S80 and button may be different.
2. Remove (need desoldering) 29F200 flash from your old ECU and put in to new one, then change face panel with bar.

[dfitz21]

You can replace with a used CCM with the exact same part number. If the buttons on the face are different you can just swap them out.

You can have the CCM reloaded by a shop with an active Vida subscription and it should come back online.

[Iroll]

Hi,
Try a vehicle reset by shorting battery cables with the key on for at least 30 minutes. Then lock and unlock the vehicle with the key in the driver's door 3 times slowly with the battery hooked up. If you have VIDA (software tab\advanced) read VIN, select CCM, Send Prog, Send Reset, repeat with CEM. Sometimes this will "wake up" a module on the network. If no luck try a software download.

It is important to remove the key for 5 minutes before disconnecting battery!

[dimitar]

I've just had to change the battery on my 2001 Volvo S80 T6. Now the climate control panel is dead. Everything on it - heater controls, heated seats, demister, etc. and also the automatic gear selector indicator light. Absolutely no fuses anywhere blown. According to form it looks like a software problem in the CCM. Volvo are aware (and obviously uninterested unless you buy a new CCM - or if you are lucky get the old one reflashed) and this isn't specific to the S80. Almost all Volvos with the same sort or climate control system are vulnerable. Anyway, has anyone had experience of this and knows what MCU etc. is in the module - I need to strip mine down this weekend. Any sensible suggestions? - and I have tried all the usual remedies. Are these CCM modules easily swappable - ie. don't need coding in.


Mate post a reply what happened . DID you solve the problem???

[Dunker]

Thanks for all the help. I haven't had time to do anything with it yet. I have another CCM but its out of an older model. I'll have a play with it this weekend and post the results. Thanks again.

[Nicko_d]

Not sure about take off key for 5 minutes...

In all service recomendation wrote... KEY MUST STAY IN II POSITION duaring connect\disconnect battary...

[Dunker]

The battery died but I have already tried shorting battery leads and the connecting back up while key in position 2. Still nothing.

[Iroll]

Waiting 5 minutes with the key out allows time for nodes to finish writing info. Connecting in position II is true, this is so you don?t get hurt turning the key on if the air bag goes off?

[Dunker]

A little update.

I got hold of a CCM from a 1998 S80. Mine is a 2001. The 1998 CCM had a few more buttons and a 28F200 and not a 29F200 thats in my 2001 CCM. A nightmare ensued when a pin broke off each flash IC when I was cleaning the pins - dont ask. Anyway, managed to scrape the casing from mine and solder a thin wire to the exposed tiny bit of copper from the broken pin. I eventually got a good reading from this chip. All I had in stock was one 29F200. So I copied the data from m 29F200 into this one and soldered it to the CCM from the 1998 S80 (that had the 28F200).

The central locking works (it didnt with the CCM removed). The rest of the buttons look like they work - they all light up like I would expect (including the gear selector indicator), although I'm not convinced everything is doing its job. Unfortunately it looks like the control for the blower flaps is stuck on windscreen only but they worked fine before so I think I need a CCM from the same year. Hopefully the heated rear screen will work - unable to try yet as it is warm here today and I need to get the thing MOT'd as it has run out while this has been going on.

I'll post results when I eventually get the right CCM.

Thanks to all.


Just to add. I have fished the 28F200 from the bin, fixed the pin and taken a reading from that. When comparing the two dumps there is about 90% difference between them. I've attached the dumps if anyone needs them.

[Iroll]

If there is a problem with the CCM damper motor it will default to defrost. You will have to relearn the damper motor end stops. Damper motor self adjustment fixes a lot of problems but you will need vida to do it.

The switches at the bottom should not be a problem. It will set a switch identity code because it does not match the car configurable file. If it has a switch id error, the CCM should still work fine but the wrong switches won't work.
:driver:
Iroll

[saabhoe]

That has happened to me before. Left lights on & batt went dead. Jump start & now CCM powered on but inoperable. All had to be done was CCM relearn with VIDA.

[gizmo666]

you can try with this dump, it is from Volvo S80 2002 model but it is 100% ok

Pass in Pm

[mhbghvfv]

It has a mc6837 with a 28f200 . i had to replace the bulbs ... Got a question the cem had the same just a 28f400 , is the same setup in the ccm bdm able ? For lets say pin retrieval or such?