Member Since: 02 Jan 2011
Location: London
Posts: 145
Very brief flash of yellow lights after starting
I've had a good read of all the posts on here re this issue but none seem to fit my exact circumstances
Just after starting sometimes, but not always, I get a flash of three yellow lights, brake, hdc and one other which I cannot recall - tends to happen when car has not been used for a few days or oddly if it has rained
Sometimes get the message special programs off for a short period 10-20 secs but not always
Brake lights are OK - LR bulbs
Brake light switch replaced in in Aug 12 at about 50k now on 73k
Battery - shows 12.45v prior to starting - 15.4v just after starting as the alternator kicks in
Alternator replaced Jan 15 with DENSO one from Advanced Factors
Ive had the car for 5 years and not replaced the battery during this time but from the above it appears OK unless the CCA drops massively - (I used the multimeter to test this as best I could and the voltage dropped to just below 10v - although the car started pretty quickly so I dont think this was a really good test)
Only relevant code was a voltage one on EPB which unfortunately I cannot recall and have deleted to see if it reappears - No other codes to speak off other than EGRs which are blanked
Do I bite the bullet and get a new battery?
The part that also puzzles me is the its often does it after it has rained?
14th Feb 2016 6:29 pm
Mr Kington
Member Since: 12 Dec 2011
Location: Scottish Borders
Posts: 1552
Messages that flash up like hdc off etc is a sign of low volts. Either battery is going or you could have a drain somewhere when its shut down.James favourite hobby is writing in the third person.
14th Feb 2016 6:59 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73134
Sounds like time for a new battery, esp if it could be original.
Member Since: 02 Jan 2011
Location: London
Posts: 145
I thought that might be the case re battery but why when wet - I can understand when cold as the battery is less efficient
Plus all the voltages appear Ok
14th Feb 2016 7:48 pm
Bodsy Site Sponsor
Member Since: 06 Nov 2006
Location: In the Clubhouse
Posts: 21361
It's the drop in volts when you start that causes the lights to come up. New battery sounds like it will fix that unless you have other symptoms or issues.Bodsys Brake Bible
Clock/ SNOTM /3Flash / 4x4Info /BT Update /Service Reset/Error Codes / Gearbox Reset See It Here
14th Feb 2016 7:54 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73134
One of the symptoms of a knackered battery is the alternator having to work very hard. Mine (new alternator & year old battery) starts at 15.2v then drops down after a bit to 14.1v.
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