For Old Models of Mercedes-Benz: The traditional digital clock on older Mercedes-Benz models will be changed by the press of 2 buttons. They are either close together on the radio console or spread far apart on the driver's display behind your wheel. On the radio, 1 button will add hours, and the other will add minutes. On the driver's display, you need to hold the left button down. That will cause either the hours or minutes on the digital clock to flash. Then, the right button will change the time. Hold the left button down again to switch from hours to minutes to off.
For New Models of Mercedes-Benz: Most recent Mercedes-Benz models will have a digital screen above their transmission. Sometimes it has menu buttons on the side, other times it is a touchscreen. Luxury cars should be packed with technology and convenience of course. These are used for either basic sound systems or more complex infotainment systems. Simply go to your home menu, find the settings, and go into the display. You should easily be able to find the clock and time settings and then change them. Additionally, depending on your model, some infotainment systems are connected to satellite and/or internet data and may change the time automatically for your ease and comfort.
Disclaimer - beware - these little cars are very complex and easy to destroy computers.
1st option: No details re history so will assume it is in limp mode only driving in 2nd or reverse?
If so check fluid level in gearbox when hot -run for 20 minutes in driveway should do the trick. Find sealed filler hose and insert aftermarket dipstick. (There are youtube videos on how to make DIY one out of curtain spring wire) If level alright it will be valve body grunge and needs expert auto to clean. Otherwise add EXACTLY 500ml of synthetic fluid from Mercedes. try operating after heating gearbox as before. If good get auto serviced.
2nd option: Operate emergency Park release if Gear change not moving. remove gear change module cover and check connections in circuit board.
Very good website called Lofty's A160 page for DIYER's
Speculation without further details but 3 usual causes:
1. Clock spring in steering wheel for airbag open circuit.
To Test - disconnect battery-disconnect airbag ribbon from steering wheel -insert 3 -8ohm resistance bypass in airbag plug below steering column feeding clockspring. reconnect battery and see if light goes out after 5 seconds
2. Check passenger seat sensor operational.
To test - with ignition off - disconnect plug under passenger seat for sensor pad and insert test ohm resistance in feed plug. switch ignition on as test 1.
3. Check steering wheel button operation. if any radio actions do not work problem may be infrared link between steering wheel and radio (especially aftermarket modules)
The hood release is not affected by the battery. Under the dashboard on the driver's side there is a small pull lever that releases the main latch for the hood.
Open the car door wide and put your head in the foot well and look up. The lever will have a marker on it like the first attached picture.
When pulled the hood should 'pop' open. Move to the front of the car and look between the slots in the front grill. There should be a pull tag, (picture 2), to release the second latch.
When you re-close the hood push 'Both' sides of the hood down as it can flex and not lock properly.
It sounds you have a problem with a vacuum activated mechanism. I would check connections and vacuum hoses for leakage. If they are OK, you may have a problem with the mechanism itself.
Disconnect and check the battery negative first, located in the trunk,"it's the accessory battery" if it's NOT giving a minimum 12 volts the convertible top will malfunction, and please DO NOT JUMP START OR RECHARGE at 12 volts WHILE CONNECTED TO THE CAR, if you choose to recharge it while in the car use a trickle charger at 2 amp over night.
If the red battery light remain present and the battery shows fully charged 12 volts, check the big fuse 100 under the 200 amp located under passenger side foot wall behind the black circle cover, remove foot wall carpet, foam, metal plate the 10 mm nuts to see the fuse cover.
Good luck.
I think the M130 engine uses a timing chain. To get you timing marks set up correctly you mignt have to take the top rocker cover off to see the Cam timing marks.
The Crank should be set up to the centre 'OT' mark for Top Dead Centre, (TDC). there is a set of numbered marks either side of it. The pulley is marked for both Top Dead Centre and Bottom Dead Centre, (BDC). Being a Mercedes the marks are in German. OT for TDC and UT for BDC.
