Hi, I've been looking through the postings and am getting very confused about what's required to retro-fit the gear shift buttons onto my SLK350 R171 2007 and I'm hoping some of you might help answer a few questions??
To be clear, this is a 350 and not a 55; it was supplied from the factory with the 7 speed auto but without the sports option so no gear change switches on the wheel.
1st, What I want to do..
option 1 - Fit the steering wheel mounted gear change 'switches' (Up/Down on both sides)
option 2 - I would prefer to fit 'paddle' shifts (UP on the right, DOWN on the left)
I don't want to spend a fortune on this, I'm happy to buy a new wheel off ebay etc. but would like to keep the same airbag so keeping costs down.
From what I've read I'm assuming the following ... can anyone confirm I'm correct?? (Thanks
1. the wiring for the steering wheel mounted switches is already in place up to the rear of the airbag?
2. the steering wheel mounted gear 'switches' (or paddles) will work without coding but I won't get the 'M' mode?
3. If I get the 428 code added, I'll then get the 'M' options when I press my 'C/S' button a second time?
4. there are 3 wires going to each gear 'switch' (earth, up, down) and 2 wires to each 'Paddle' (earth, up) and (earth, down) so if I fit paddles I just need to check the 2 wires go to the correct pins on each of the 3 pin sockets?.
If I'm correct in the above, can anyone confirm what steering wheel will fit my SLK350 and still use the same airbag. (either with gear 'switches' or 'paddles'). I believe some other Mercs had the same wheel as the SLK with paddles fitted.
I know this is a lot of questions (which have is some ways been covered by other posts) but I'm just trying to get it clear and all my facts right BEFORE I start pulling my car apart!!
If this all works out I'll post nice clear instructions covering every step with photos of wiring and modifications required.
Thanks in advance for any help given.