No malfunctions so why this ??
02-11-2014, 07:07 AM
#1
No malfunctions so why this ??
On a couple of occasions I have left my Merc standing for 14-18 days without using her.
On those occasions, I have found that the following happens.
I turn on the ignition, and the following visit workshop messages scroll through.
ESP
Low Brake Pressure (+ ABS light on)
Airmatic
None of these seem to be down to any fault with the systems listed because when I do the left to right steering re set.
All clears and is good to go ?
No malfunctions shows on the history.
And I drive away with everything in perfect working order.
If I use the car more frequently, this doesn't happen.
I thought this was down to connecting an intelligent trickle charger, but this is not the reason because I didn't bother on this occasion.
To explain,
I have no battery drain issues (Battery is 100ah Varta and only 2 months old)
Airmatic pump only kicks in about 20 minutes after driving and then not for long, (also the suspension height on all four wheels is good, even after standing without use)
My guess is that either after standing unused, The airmatic air canister loses some pressure and thats being picked up.
The servo for the brakes is doing the same and that's also being picked up.
Or, the battery voltage has dropped, and although a healthy cranking amps is present the starter load is enough to cause voltage drop which is affecting the on board diagnostic system.
As said everything is fine once performing re set left to right.
Has anyone had similar experience or reasons as to why this should happen ?
Many Thanks for your comments on this.
On those occasions, I have found that the following happens.
I turn on the ignition, and the following visit workshop messages scroll through.
ESP
Low Brake Pressure (+ ABS light on)
Airmatic
None of these seem to be down to any fault with the systems listed because when I do the left to right steering re set.
All clears and is good to go ?
No malfunctions shows on the history.
And I drive away with everything in perfect working order.
If I use the car more frequently, this doesn't happen.
I thought this was down to connecting an intelligent trickle charger, but this is not the reason because I didn't bother on this occasion.
To explain,
I have no battery drain issues (Battery is 100ah Varta and only 2 months old)
Airmatic pump only kicks in about 20 minutes after driving and then not for long, (also the suspension height on all four wheels is good, even after standing without use)
My guess is that either after standing unused, The airmatic air canister loses some pressure and thats being picked up.
The servo for the brakes is doing the same and that's also being picked up.
Or, the battery voltage has dropped, and although a healthy cranking amps is present the starter load is enough to cause voltage drop which is affecting the on board diagnostic system.
As said everything is fine once performing re set left to right.
Has anyone had similar experience or reasons as to why this should happen ?
Many Thanks for your comments on this.
