Date registered: Aug 2006
Vehicle: 96' S500
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Fuel level sending unit changeout
On my 96' S500 the fuel tank gauge sometimes drops to empty and then slowly will come back to correct level.
I searched the forum postings and it sounds like replacing the fuel level sending unit would be the likely fix. There is a diagnostic for the cluster available on Alldata so maybe I will do that first.
Looking at the Alldata procedure it appears that replacing the sender unit is an easy DIY change out and since I did a similar job on my Q45 (fuel tank pump), I figure I can do this.
I have two questions though. I see that there was an issue with certain intrument clusters with this indicating problem when the tank is less than 1/4 full. In my case it happens at various levels so I'm hoping it is not the cluster. Have any of you had to change a cluster because of this?
I also see that the replacement part is a lever sender type unit and replaces an immersed pipe sender. Seems lower tech to me but does my 96' have the immersed pipe style as factory installed or am I likely going to swap a lever type for another lever type unit?