This is my first post on this Tesla forum. I am a retired engineer and DIY gear-head since the 50's. I participate in Swedespeed regarding our 2015 Volvo XC60, before that on SaabNet for a series of 9000s and a 9-5, and briefly on some Acura forums for my 2002 RSX-S, which will be replaced by a new Model 3, then passed-on to my heirs.
I have ordered a Model 3 Performance and have some questions that Natick is not able to answer and are not adequately covered in the owner's manual.
1. What measures are taken to avoid rust of the steel body parts, particularly the dog legs and rocker panels?
2. How are steel and aluminum parts joined to avoid galvanic corrosion?
3. Each axle seems to have a gear case containing a 9:1 reduction and open differential, but there is no info about fluid type, capacity, servicing, etc.
4. The owners manual says it cannot tow a trailer, but the DIY Model 3 website shows a removable hitch as part of a towing package. Please clarify.
5. It is advertised that if one motor fails, the other can keep you going. What is the probability of a failure that freezes up an axle?
6. In the Park "shifter" position, is there an independent locking mechanism in the rear motor/gearbox or does it depend on the electric rear brake motors?
7. Is there really neither hand brake nor emergency brake pedal?
They answered yes on #7, but said the others were too technical and some answers may be proprietary. I am not looking for any trade secrets, just assurance the these issues have been adequately addressed, particularly #1 and #2, given that Model 3 is Tesla's first predominantly steel car. I also tried an on-line chat with Tesla, who regarding #4 said there is no towing package and came across as very arrogant on the other questions, telling me to contact my service center, which Natick already did.
Any advice or comments from forum members on these questions, or on what to look for during a test drive scheduled for Wednesday March 18, will be much appreciated. Thanks in advance,
I have ordered a Model 3 Performance and have some questions that Natick is not able to answer and are not adequately covered in the owner's manual.
1. What measures are taken to avoid rust of the steel body parts, particularly the dog legs and rocker panels?
2. How are steel and aluminum parts joined to avoid galvanic corrosion?
3. Each axle seems to have a gear case containing a 9:1 reduction and open differential, but there is no info about fluid type, capacity, servicing, etc.
4. The owners manual says it cannot tow a trailer, but the DIY Model 3 website shows a removable hitch as part of a towing package. Please clarify.
5. It is advertised that if one motor fails, the other can keep you going. What is the probability of a failure that freezes up an axle?
6. In the Park "shifter" position, is there an independent locking mechanism in the rear motor/gearbox or does it depend on the electric rear brake motors?
7. Is there really neither hand brake nor emergency brake pedal?
They answered yes on #7, but said the others were too technical and some answers may be proprietary. I am not looking for any trade secrets, just assurance the these issues have been adequately addressed, particularly #1 and #2, given that Model 3 is Tesla's first predominantly steel car. I also tried an on-line chat with Tesla, who regarding #4 said there is no towing package and came across as very arrogant on the other questions, telling me to contact my service center, which Natick already did.
Any advice or comments from forum members on these questions, or on what to look for during a test drive scheduled for Wednesday March 18, will be much appreciated. Thanks in advance,