Customer took car to another shop for battery replacement.after they replaced battery nothing on a/c control panel would light up,no blower or compressor engaugement.have checked all fuses and all are fine.any help would be greatly appreciated.

 

I'm a bit dissapointed more knowledgeable members have not replied as I have to admit I don't know ****. Try going back to the point of issue, the battery change. Disconnect the battery, connect the two leads together for 15 minutes and reconnect. After that I'm clueless as to what to try next. Are there codes in the computer for issues like this? Might try there unless someone eles more knowledgeable replies.

Jerry

 

Hello, Disconnect the battery's cabels and touch the two of them together. Insert the ignition key and turn it to position II and them hook up the battery. I read this procedure on a Volvo site and gasped, "another silly modern thing". Take a little time and search on this and other boards on battery reconnection in case I didn't remember it EXACTLY right. Example: Maybe turning any climate control settings to off?? Kira

 

Go here http://howardsvolvos.webs.com/electricalelectronics.htm
All credit goes to Howard of Howard's Volvo Forum
Electronic Climate Control Not Working

If your ECC doesn't work and you have recently dis/reconnected the battery cable, then you have hit a fairly common problem that I have heard in the Volvo forums.

While it has never happened to me, there is a sequence of proper steps to dis/reconnect the battery that Volvo recommends. I'm guessing for those people that have some how disabled their ECC, this procedure was not followed. See here for reference on how to do that.


But if you are reading this section, you likely already have this problem. Here are the solutions that I have read about


http://www.vvspy.com/frameset.php?bn=volvospy_newv70c70



In a nutshell, you disconnect the battery terminals again and hold it together for 20 seconds as suggested by the above Volvo tech. I read that this discharges the internal capacitors and resets some stuff. However, everyone I heard that tried this had no success.


The only success I have heard is to take it to the dealer to reload ECC software ($200 or so from what I have read). If this doesn't work, they have to install a new ECC at the cost of close to $1000.


So yes, this particular design and the particular failure mode is probably going to catch a few owners of this car.

Sunroof or homelink doesn't work

Each time Volvo's electronics for sunroof + homelink (+some other interior circuits that I don't know about) loses power, they require a certain initialization sequence. You might have lost power due to a recently disconnected battery during service.

Just use your remote to lock and unlock the door and everything will work again. This initializes these electronics circuits properly after power loss.
Another reason sunroof doesn't work is related to the alarm system. See here.


ECC has no heat

There are a couple of interior cabin temperature sensors in this car. One of them is behind the 3 slits on your ECC and sense temperature by sucking in the cabin air over a heated wire. Dusts + threads gets in and causes the fan spindle inside to jam. This problems shows up when your ECC can't provide heat except at MAX.
A easy way to determine if this is your problem is to listen for the faint noise behind the ECC after the engine is turned off. This noise is coming from the fan running briefly after the car is turned off. DIY for getting the ECC panel off can be found here
http://www.volvoxc.com/resources/how...le_removal.pdf
*IMPORTANT* Read this to avoid damage to your ECC.
Here is a couple of discussion thread on this
http://www.volvoxc.com/forums/showth...aded#post83588
http://www.brickboard.com/AWD/volvo/1036243/V70/2001_v70_t5_heater_problems.html
After ECC removal, just get a cotton swabs + some alcohol to clean the dirty fan spindle. Dealer labor maybe 1 hour.


ECC light bulbs out

*IMPORTANT* Read this to avoid damage to your ECC.
http://www.volvoxc.com/resources/how...le_removal.pdf
http://www.volvoxc.com/forums/showpost.php?p=80065&postcount=5
So skip dis/reconnect the battery from the original direction and when you have the ECC freed, just disconnect the 12V socket connector to turn it around.
There are 6 bulbs (4 of one type, 2 of another type indicated by their plastic mounts). Volvo wants like $10 each for them. I read some people found equivalents at Radio Shack for much cheaper. You might take your burnt bulb to RS and check


Fuel gauge not working

I had this problem where

• fuel gauge didn't work
• rear door doesn't lock
• front door can't be unlock with the switch on the driver's side door
• rear wiper doesn't work
• rear spray doesn't work

This problem started when I was running on fumes and finally stopped to get 5 gallon of gas. Soon after while at a stop light, I heard a pop noise and the engine RPM dipped briefly. Then it was all back to normal except the backend electronics didn't work anymore.
Seems like others have had the same
http://www.matthewsvolvosite.com/chat/phpBB2/viewtopic.php?p=60611#60611
http://forums.swedespeed.com/zerothread?id=69694
Battery dis/reconnect sequence worked for me (See this link). Unfortunately, didn't know what was the real cause I keep on reading about these electrical gremlins in this car.


Headlight Bulbs

Almost everyone complains these fail often. Luckly, it is easy to replace. Part $10-$20. DIY instructions can be found here

http://www.volvoxc.com/resources/how...ss_upgrade.pdf

Besure to insert the bulb with guide lug facing up. The bulb is installable with the guide lug facing down and cause incorrectly aligned headlights.


Alarm Service, Alarm Triggered, Sunroof Not Working

I got these messages each time I unlocked the car and started it

• "Alarm Triggered"
• "Alarm System Service Required"

The red light in the center of the dash would flash super fast with the alarm triggered message. Then everything returns to normal. Sometimes, my sunroof doesn't for awhile after this.
I read that the siren unit is the culprit. Some people also have opened it up and noticed the internal transformer blew up. When this unit isn't working correctly, the sunroof doesn't work. When I got my siren out and opened it up, it has blacken residue inside indicating some electronics had been fried. Here is a quick test to see if your siren is the culprit.
Pull fuse #38 on the fuse box inside the driver side compartment. This is the siren fuse. If your sunroof works after, then your siren is probably bad. Another trick I did is to lower the driver side window, lock the car and reach in to open it. If the siren doesn't sound, then it is probably bad.
To disconnect or take out the siren, do this

• Jack up the passenger side front wheel
• Remove the tire
• Follow direction 3 from the link below. After the 2 nuts come off, remove the piece of liner.
• Drill out the 5 rivot in front of the wheel liner
• Now you have access to inside and disconnect the siren

If you want to take it out, you have to remove the security bolt. I took a Dremal tool with a cutting tool and cut a slot out for the flat head screw driver to unbolt it. I used a 1/4" ratchet with a flat head screw driver bit to break it loose.
Here is the direction on how this siren is assembled
http://vccs.volvocars.se/accessories...e-2ff5e49afa6b
If this link is just during my web session and doesn't work for you. Just go to the vccs.volvocars.se website and follow this sequence

• Click installations
• Select your language, hit go
• Select car model + year and check electrical systems and hit search
• You will see alarm near the top of the list

Here are some picture from someone who cracked the sealed siren open. Again, my looked even worse. My car is parked in the garage every night and this siren unit is sealed. So I think it is just bad design rather than any kind of dirt or whether related issue. Maybe when the battery is wearing down... it somehow triggered some problems. I don't really know. All I know is that my car is about 8-9 years old. Other failures I have heard are on this car in this age range.
http://www.matthewsvolvosite.com/forums/viewtopic.php?t=13680&postdays=0&postorder=asc&hig hlight=fubar&start=10
Here is the picture of my failed siren after I cut it open. See the black wire from the internal battery got cooked and the area surrounding the transformer just got fried.
http://i49.photobucket.com/albums/f2...4/DSCF2331.jpg
After the siren is disconnected or taken out, you will get a Alarm Service Message each time you unlock the car and start it. But the sunroof will work. I read that the immobilizer still works. You just no longer get the siren sounds.
I got tired of getting the Alarm Service message and got a replacement part ($150-$200), installed it and plugged it in (with battery disconnected). I then took the car to the dealer to have them link the siren to the car using their computer (They charged me $30). Although it pretty much functions correctly without going to the dealer for computer setup. I saw no difference in the operation before and after dealer's linking.
The installation direction above also indicate the siren can be installed in cars that don't have it. I'm guessing this means the dealer can "turn off" the siren feature and avoid getting the message when the siren isn't present. However, when I called one dealer, they said this function can't be turned off. Maybe this siren is installed in all US cars but not some other region. Not sure.


Turn Signal Going Super Fast

And you get a light bulb is out message. I had this problem that intermittently acted up and was dependent on the weather. I would get this failure often during heavy rains but other wise okay.
Obviously, check the light bulb to see if the filament is in tact. But in my case, the bulb was obviously working when weather was nice. Traced it to a common problem in the front turn signal socket. The contacts between the socket and the bulb was problematic as explained by the parts person at the dealership where I got the newly redesign socket.


SRS Codes

I got SRS code 0014 and 001C, these pointed to an open circuit between the SRS control module and the driver side steering wheel airbag. See here for details.

 

This covers a vast majority of Frequently Asked Questions.
ED7