Close
QUESTIONS

RepairPal is your advocate for car care advice and guidance

Q: Hardtop release on 1990 Mercedes-Benz 300SL

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
The hard top will not release at the windshield. Any ideas
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
First if the button is flashing slow (1 time/sec) that means YOU are doing something wrong(windowsnot syncronized, roll bar not lowered, or trunk lid open etc see owners maunal for OWNER malfunctions) if its flashing FAST (2x/sec) that means either the system is low on fluid or a contact switch is inop.. BUT take the tool with the 6 mm allen bit on the flat wrench type thing in the tool kit (or any 6 mm allen wrench , lower the visors and remove the little dime sized plugs that cover the windshiled latchrs release and turn each on till u see the top release then try the Top switch again . sometimes moving the switch back from open to close quickly will free up sticky solenoids and /or control valves. Have engine running when operating top. Do NOT turn key off during lowering /opening top as this will throw the ECU into a 'unknown switch status' mode that only locking down a hardtop manually with the special tool may be required to cure.. the 1990 SL's are problematic as only an time consuming 'breakout' box (mushroom) diagnosis be possible.. Remember this system likes to start from a easily definable status . Ive had nearly 100% success with starting with hardtop resting on latches ,ready to be pulled down by system. This seems to be the baseline for operation to commence
you need a special key to realese the hard top
by the windshield you will see two small holds those are to realase the hard top
Didn't find what you were looking for?