Assorted (possibly related) problems with the 05 CTT

[mcbit500]

Some time ago the Kessy slowly died, a gradual deterioration until touching the door handles no longer unlocked the doors. The car is still keyless inside with a very rare "Key Not Found" or "Key Not Recognised" warning. This happens with both keys and both keys will still open the doors remotely from about 20m - 30m.

Initially suspected the (Car) battery but got 14V at the terminals under the bonnet with engine off and figured that was OK. I decided to leave the problem solving until next service as it was no great inconvenience.

A couple of months ago the water temp gauge actually started to react, instead of being constant just to the left of the 80C mark it would make brief excursions to the right hand side, when applying some power, but never getting near to the 100C mark. Nothing there to be concerned about other than it was a change from the norm. Suspiscions were; dirty radiators, thermostat not opening fully, or faulty sensor.

Yesterday, parking sensor display giving random double reds whilst stopped in open ground before and after washing.

Today, started noticing some rough gear changes then after a while on the transmission display on the dash PRND were all selected simultaneously and the gear engaged was not shown. Transmission still operated in auto, manual and tip with rough changes but the display would not reset until I stopped the car and restarted. After about 10 mins the same business started again.

No fault lights have illuminated during any of these events.

Do I consider general electrical failure or perhaps the battery is faulty or I have a bad earth somewhere?

No problems at all with starting. Any bright ideas other than

[deilenberger]

SIngle battery or dual battery model? Does it have a battery hidden under the Bose speaker in the spare tire well?

It sounds like battery failure. On the dual battery models - one battery is used to start the engine. The other one to run everything else. If that one is failing - undervoltage conditions will cause odd symptoms from modules that are powered off it. Symptoms such as you describe. The 14V you read under the hood was from the starter battery. If you have two batteries, you'd need to check voltage at the other battery.

Check to see if you have two batteries.. if you do - sounds like one is failing.

[mcbit500]

SIngle battery or dual battery model? Does it have a battery hidden under the Bose speaker in the spare tire well?

It sounds like battery failure. On the dual battery models - one battery is used to start the engine. The other one to run everything else. If that one is failing - undervoltage conditions will cause odd symptoms from modules that are powered off it. Symptoms such as you describe. The 14V you read under the hood was from the starter battery. If you have two batteries, you'd need to check voltage at the other battery.

Check to see if you have two batteries.. if you do - sounds like one is failing.

Don,

Pretty sure I don't have 2 batteries but to be honest I haven't checked, will take a look tomorrow morning.

thanks.

[wvicary]

If you measured 14V at the battery with the engine off that might indicate a problem, a failing battery can have too high of open circuit voltage. You need to test the battery under load and then verify the charging system operation. If you do have a two battery system, you must isolate the batteries and test them independently of each other.

[mcbit500]

I guess since I have a collapsible spare wheel and a Bose Subwoofer that I don't have a second battery.

[mcbit500]

Some time ago the Kessy slowly died, a gradual deterioration until touching the door handles no longer unlocked the doors. The car is still keyless inside with a very rare "Key Not Found" or "Key Not Recognised" warning. This happens with both keys and both keys will still open the doors remotely from about 20m - 30m.

Replaced KESSY module now OK

A couple of months ago the water temp gauge actually started to react, instead of being constant just to the left of the 80C mark it would make brief excursions to the right hand side, when applying some power, but never getting near to the 100C mark. Nothing there to be concerned about other than it was a change from the norm. Suspiscions were; dirty radiators, thermostat not opening fully, or faulty sensor.

No resolution. within normal limits apparently.

Yesterday, parking sensor display giving random double reds whilst stopped in open ground before and after washing.

Never happened again

Today, started noticing some rough gear changes then after a while on the transmission display on the dash PRND were all selected simultaneously and the gear engaged was not shown. Transmission still operated in auto, manual and tip with rough changes but the display would not reset until I stopped the car and restarted. After about 10 mins the same business started again.

This was actually a dodgy EGR valve and is cure after a long wait for the part which was not available locally.

Car is running wonderfully again...for the time being!