993 TT Weak Battery

[DCDoc]

After 2 weeks without starting, the battery in my 96 TT is too weak to start the car. The battery has been replaced, a battery drain test done and the charging system tested. A local mechanic that I have a lot of trust in said he has seen a relay on the cooling fan be the problem. Supposedly it causes the fan to run constantly and this prevents the car from fully charging the battery during normal use. Does anyone have any thoughts?

[irhmsd]

Did the charging system test show any drain? If not, then it is not the fan relay sticking - not to mention you can hear that fan run pretty easily. That would have shown up on the test. Take it back for another test to see if anything is pulling on the battery. If not, then either it is a bad new battery or the drain is something that kicks on and off intermittently - though not likely. If all checks out fine, buy a 50 dollar battery tender from the dealer and keep the car plugged into the wall. The other end simply plugs into the lighter on the car. It is simple, painless and inexpensive. I have one for all of my cars.