- Joined
- Aug 17, 2017
- Messages
- 1
- Reaction score
- 0
- Location
- Laurel, MD USA
- VCDS Serial number
- C?ID=313785
Hi, my 2004 W8 (NAR) Phaeton's been in the dealership shop a couple months...bad battery drain that kept killing the accessories (driver side) battery and finally killed the starter (passenger side) battery. Tech traced problem to the relay that connects the two batteries...2V voltage drop on one side. (I haven't picked the Phaeton up yet so I don't have the paperwork to look at.) At one point after fixing the relay, tech thought the ignition switch might be bad...I had that replaced several years ago. Working with the VW engineers in Germany, the tech eliminated the ignition switch issue and it's declared fully healthy.
Service advisor said the VW engineer asked if I live close to an airport...that airports generate signals (presuming the ground-based radars and other ground-air comms systems) that they've found can cause a Kessy to act up. Has anyone else heard this before? Reading thru the threads here after doing a fast Google search, I saw mention of 125 KHz and 315 KHz signals associated with the Kessy. (I worked F-15 avionics "black box" repair in the 1970s during my first stint in the US Air Force...radar, flight/nav/weapons controls...) I'd think the normal signals from airport systems would be very high in the harmonics count (i.e., the 1000th harmonic of the 125 KHz signal would be 125 MHz, in the range of air-ground radio traffic), and the signal strength would drop off enough to not be an issue. (I'm very rusty on my electronics, though...) I do see aircraft flying over the house multiple times daily at altitudes around 2,500 ft to 5,000 ft (departures and landings).
I'm waiting to see if VW engineers provide more details on what airport systems create issues. I work less than 10 miles away from Dulles International Airport in VA and I live about 17 miles away from Baltimore-Washington International Airport in MD. It's not a daily driver (2015 Golf TDi SE is the daily driver for the 40-mile commute to work) so it does sit until weekends at a minimum. Their comment piqued my curiosity and I can't be the first person who's heard this question from a VW engineer...at least, I hope I'm not.
Thanks and regards to all! v/r, Jim D, retired enlisted member/current DoD civilian
Service advisor said the VW engineer asked if I live close to an airport...that airports generate signals (presuming the ground-based radars and other ground-air comms systems) that they've found can cause a Kessy to act up. Has anyone else heard this before? Reading thru the threads here after doing a fast Google search, I saw mention of 125 KHz and 315 KHz signals associated with the Kessy. (I worked F-15 avionics "black box" repair in the 1970s during my first stint in the US Air Force...radar, flight/nav/weapons controls...) I'd think the normal signals from airport systems would be very high in the harmonics count (i.e., the 1000th harmonic of the 125 KHz signal would be 125 MHz, in the range of air-ground radio traffic), and the signal strength would drop off enough to not be an issue. (I'm very rusty on my electronics, though...) I do see aircraft flying over the house multiple times daily at altitudes around 2,500 ft to 5,000 ft (departures and landings).
I'm waiting to see if VW engineers provide more details on what airport systems create issues. I work less than 10 miles away from Dulles International Airport in VA and I live about 17 miles away from Baltimore-Washington International Airport in MD. It's not a daily driver (2015 Golf TDi SE is the daily driver for the 40-mile commute to work) so it does sit until weekends at a minimum. Their comment piqued my curiosity and I can't be the first person who's heard this question from a VW engineer...at least, I hope I'm not.
Thanks and regards to all! v/r, Jim D, retired enlisted member/current DoD civilian
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