The outdoor temp sensor on my 08 Vantage is acting up. It would read really high after I park it and it would take too long to "cool off" to the actual ambient temp. Dealer took out it to calibrate and still doing the same. Car is still under warranty but dealer said he must ask permission from Aston to replace it. I thought there was a service bulletin on the temp sensor last year or year before. Can someone please post it here? I saw it here before but I can't seem to find it now when I did a search. Thanks!

 

My DB9 has a similar problem, reads very very high. I will be curious to see what comes of this thread.

 

same here

 

My dealer replaced mine on my 2009 vantage. The new one is no better. I think the issue is the placement of the sensor and I have thought about movinging it to a less sensitive location( farther from engine) and fabricate a wiring harness extension. I have not spent any time working on this, 1st I need to determine where the sensor is.

 

Sorry, don't have the bulletin, but I had the same issue on my 09 V8V, which basically rendered my A/C useless (system would get confused and the blower fan took on a life of its own). It was replaced under warranty, no questions asked.

 

The sensor likes to take a dump. If it reads bad, and you have a sport shift, it can cause shifting issues too,and a/c issues as stated. Better to replace it, as there is an updated part now. The sensor is in the front grill both db9 and v8.

 

Dealer doesn't need auth to replace the ambient temp sensor..don't know there story, but thats far as I'll go before I get a phone call...lol
This sensor can simulate NUMEROUS faults, a DB9 won't even charge over 12V..volante tops stop working, a/c goes bonkers..etc endless....and there is no "calibration" for the sensor..if feeds are fine and open circuit faults are not stored, you just replace the ambient temp sensor behind the front grill..that's if the fault is simulated by the tech

 

Sry off topic, replied to your PM..let me know if you get it

 

Fixer and Irish,

Do you know when they updated the temp sensor? The one in my '11 V12V works better than the one in my '07 V8V, but it still can read really high at times, as when I first drive the car after it's been sitting after a drive.

 

Don't have the bulliten handy, but it was earlly..like 07-08 models.

Believe it was updated to avoid water ingress, water was getting inside the ambient sensor and corroding it..but this would result in no feed at all.

But if the car was ran, then parked for a few hours..say out for dinner at a resto...the radiator will heat the sensor and give this false reading on startup..while driving sensor will cool down and give correct ambient temp..large percentage of cars have this concern whn the ambient sensor is under the bonnet area..don't know why aston didn't copy volvo..aston used the S40 mirrors but not use there ambient sensor in the mirror, which would have avoided this concern all together

 

Agree it's a stupid place to put the sensor. I can't remember the highest reading I've seen on the V12, but my V8 regularly would give readings of over 120 degrees F (30-40 degrees higher than ambient).

 

Just wanted to be certain, had the bulliten handy now..

Issued:

May 2007

DB9 & V8 Vantage
Safe VIN’s: DB9 A00001-B07577, V8 C00001-C04625

 

Probably a dumb question (the kind I'm best qualified to ask): I have an '06 that's out of warranty. Would I have to pay the dealer to get this fix?

 

No. You should be able to handle this. It is really simple. Should take about 20 mins or so

 

My 2009 DB9 falls outside of that VIN range, yet my temp readout tonight showed 132f versus an actual exterior temperature of 77f.

So, is that typical behavior for a failed sensor?

Jeff