martin_sv
Senior Member
- Joined
- Jul 6, 2012
- Messages
- 93
- Reaction score
- 0
- Location
- North Hampshire
- Your Mercedes
- 350SL R230 2003 + CLK320cdi 2006+ 156 Alfa
Since buying my SL 350 2003 last year I on occasions got the "bonnet open" message in the dash. Lifting the bonnet and dropping from a good 18-24" seemed to do the trick, (but not always). At this time I could find no evidence that either of the catches had in fact come undone. I assumed it was the oversensitive microswitch that was the issue and I tried to clean and lubricate the area as best as I could. The messages then seemd to stop until now some 9 months later (although only about 1500 miles have been covered)
Now however the drivers side catch is clearly not locked when I get the message so the system is no longer crying wolf. I've tested the errant catch by inserting a screwdriver shaft of similar thickness to the bonnet mounted bar and the catch appears to work fine. Once latched no amount of pulling or wiggling seems to cause it to unlatch. When I drop the bonnet both sides are clearly latched and feel rock solid.
So does anyone have an idea about what's happening and how the catch can be adjusted? The top bar appears to have lock nuts that ought to allow it to protrude a little further doen but these seem like they're in fact locked solid. Perhaps I need to take the whole of the top catch assemble off? Thanks for your assistance,
Martin
Now however the drivers side catch is clearly not locked when I get the message so the system is no longer crying wolf. I've tested the errant catch by inserting a screwdriver shaft of similar thickness to the bonnet mounted bar and the catch appears to work fine. Once latched no amount of pulling or wiggling seems to cause it to unlatch. When I drop the bonnet both sides are clearly latched and feel rock solid.
So does anyone have an idea about what's happening and how the catch can be adjusted? The top bar appears to have lock nuts that ought to allow it to protrude a little further doen but these seem like they're in fact locked solid. Perhaps I need to take the whole of the top catch assemble off? Thanks for your assistance,
Martin
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