I put my mercedes into drive and it won't move, reverse i...

Hello and thank you for using JustAnswer. My name is \*\*\*\*\* \*\*\*\*\* I will do my best to assist you. During this conversation you will be given an automated offer for a phone call. You may accept or decline that offer.I don’t personally offer this service so if you take this another tech may call I’m sorry that you’re having trouble with your vehicle. I will do my best to help you resolve them. Please understand that I do not know your knowledge or capabilities so I may need to ask questions to find out basic information to help solve your specific problem. My aim is to give you the best service possible and to help you. If you have any questions or concerns, please don’t hesitate to let me know. Sometimes it may take a moment for me to respond because I may have to look up information about your concern. I appreciate your patience and will provide responses as soon as possible. Did the mechanic indicate that there were any fault codes and if so, what are they Did he do physical pressure testing of the transmission hydraulic system

it was a RAC response, he plugged in a diagnostic tool but was unable to resolve issue by resetting transmission. No physical tests on hydraulic system. I can provide report of test via email...I don't want to spend more money at this stage, it's an old car, just wanted an expert opinion..

HI, Ok, they really dont have the equipment to do any pressure testing which really needs to be done at this point. Possible issues are a blockage in the valve body, weak line pressure due to internal leak in a valve body passage, failing forward gear direct clutches, failed shift solenoid or pressure regulating solenoid. Unfortunately it does require a transmission specialist shop to diagnose which of the above is the culprit With the low mileage and age, I mostly suspect an internal leak due seal or gasket shrinking and drying out over the last 21 years due to not driving enough which means the seals and gaskets inside are not getting properly lubricating to prevent drying out and shrinking Thanks for using Just Answer and letting me help you. I hope I provided what you needed. If you find more help is still needed, let me know by listing out any remaining questions you have on this concern. I hope the remainder of your day is well.