IPD sale Volvo Parts
Did you know? 🤔
Logged in users can get email notification of topic replies Log in or register (free).
Amazon Link Buy your stuff using this and it helps MVS!

Temp Limits Roof Operation

Help, Advice, Owners' Discussion and DIY Tutorials devoted to the second generation C70, S40 and V50 Volvos -- awkwardly model year 2004 ½ onwards -- plus where to go for advice and discussion on Volvo's sporty C30 Coupe powered by Volvo's ubiquitous inline 5-cylinder power plant.
pjmc480
Posts: 3
Joined: Sat Mar 16, 2019 5:14 pm
Year and Model: 2006 c70 T5
Location: Virginia
Has thanked: 0
Been thanked: 0
United States of America
pjmc480

Temp Limits Roof Operation

Post by pjmc480 » Sat Mar 16, 2019 5:18 pm

Tried to open the hard top today. Got this message "Temp Limits Roof Operation". Say's it's caused by power retractable hardtop mechanism overheating and to wait 5 minutes and try again. After waiting still not working and getting the same message. Any ideas? Is there a reset button anywhere?

Thanks



User avatar
RickHaleParker
Posts: 2389
Joined: Mon May 25, 2015 2:30 pm
Year and Model: See Signature below.
Location: Kansas
Has thanked: 3 times
Been thanked: 257 times
United States of America
RickHaleParker

Re: Temp Limits Roof Operation

Post by RickHaleParker » Sat Mar 16, 2019 6:09 pm

No reset button.

There is a temperature sensor in the electric motor. The sensor is connected to the
Convertible Roof Module (CRM). At high temperatures the Convertible Roof Module (CRM) limits
the functionality of the hydraulic pump in order to avoid damage to the system.

If you cannot open the roof when it is cool. Most likely the temperature sensor in the electric motor is defective or you got a wiring problem that is fooling the CRM into thinking the temperature sensor is yelling TOO Hot!.

I would have the car scanned with Volvo Vida to see if there are any CRM error codes.


Platform: P80 1998 C70, B5234T3, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.
----------------------------------------------------------------
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

pjmc480
Posts: 3
Joined: Sat Mar 16, 2019 5:14 pm
Year and Model: 2006 c70 T5
Location: Virginia
Has thanked: 0
Been thanked: 0
United States of America
pjmc480

Re: Temp Limits Roof Operation

Post by pjmc480 » Sat Mar 16, 2019 9:26 pm

Thanks for the reply. I will get it scanned.



jimmy57
Posts: 6167
Joined: Fri Nov 12, 2010 9:25 am
Year and Model: 2004 V70R GT, et al
Location: Ponder Texas
Has thanked: 1 time
Been thanked: 127 times
jimmy57

Re: Temp Limits Roof Operation

Post by jimmy57 » Sun Mar 17, 2019 9:10 am

How cold was it in VA when you tried to open it? The top will close at much lower temps but stops opening if the temp sensor gets to around 32F. I'd have to look up the exact temp. The sensor is inside a foam sound enclosure for the motor in the bottom of the trunk. I would expect it to not change temps very quick so a really cold night might have it say NO well up into a day when it goes up 20 degrees.



User avatar
RickHaleParker
Posts: 2389
Joined: Mon May 25, 2015 2:30 pm
Year and Model: See Signature below.
Location: Kansas
Has thanked: 3 times
Been thanked: 257 times
United States of America
RickHaleParker

Re: Temp Limits Roof Operation

Post by RickHaleParker » Sun Mar 17, 2019 10:27 am

jimmy57 wrote:
Sun Mar 17, 2019 9:10 am
The top will close at much lower temps but stops opening if the temp sensor gets to around 32F.
The owners manual states the lower limit is 14° F (-10° C).


Platform: P80 1998 C70, B5234T3, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.
----------------------------------------------------------------
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

jimmy57
Posts: 6167
Joined: Fri Nov 12, 2010 9:25 am
Year and Model: 2004 V70R GT, et al
Location: Ponder Texas
Has thanked: 1 time
Been thanked: 127 times
jimmy57

Re: Temp Limits Roof Operation

Post by jimmy57 » Sun Mar 17, 2019 2:12 pm

I drove one for a while and it would not open at much below freezing. The training info is what you listed but they were known to not go down at close to freezing. I don't know if software was tweaked or temp sensors were not spot on accurate. Getting all the seals wet and the water freezing and then opening roof causing damage (warranty expense) to seals with less force than the pressure needed for relief valve to open would be the concern. When the top is stored in the boot there is little or no risk since the three parts have no seal contact stored on the perches provided there.



User avatar
RickHaleParker
Posts: 2389
Joined: Mon May 25, 2015 2:30 pm
Year and Model: See Signature below.
Location: Kansas
Has thanked: 3 times
Been thanked: 257 times
United States of America
RickHaleParker

Re: Temp Limits Roof Operation

Post by RickHaleParker » Sun Mar 17, 2019 3:56 pm

Could be that the hardware temperature have not recovered from the overnight low. It stand to reason that the temperature of the hardware is what matters not the Ambient temperature.


Platform: P80 1998 C70, B5234T3, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.
----------------------------------------------------------------
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

pjmc480
Posts: 3
Joined: Sat Mar 16, 2019 5:14 pm
Year and Model: 2006 c70 T5
Location: Virginia
Has thanked: 0
Been thanked: 0
United States of America
pjmc480

Re: Temp Limits Roof Operation

Post by pjmc480 » Mon Mar 18, 2019 8:31 am

Tried to open it the next day and it worked fine. Still going to get it scanned.



Post Reply