Where is the fault code on a Mercedes SL?

The AC control unit in the R129 Mercedes SL model along with a few other MB models of the time (outlined in the CS1000 manual) could be accessed to diagnose system problems by retrieving fault codes directly from the AC control unit console in the car.

How do you reset a Mercedes Fault code?

Plug it in, Push the button, Count the light flashes. Refer to the included paper overview sheets. For more details on each code search the Master PDF download from my site. Read and Reset fault codes on 1988-1995 Mercedes cars that have the 8 or 16 socket diagnostic port near the battery. Mercedes cars with the round 38 socket connection.

What to do if your Mercedes SL Class R129 is not charging?

An alternator that is not charging will eventually leave you stuck with a dead battery. Check your charging system. If your engine is running rough and misfiring you may need to change your cap, rotors and wires. If your valve cover gaskets are leaking we will show you how to replace them. Engine running lean/rough. Maybe you have a vacuum leak.

What are all the codes on a Mercedes Benz?

Use an advanced OBD-II code reader to read and erase Engine CEL, Transmission, ETS, ABS, Airbag and other systems. There are also codes for other control units such as transmission, ABS, SRS, ESP, 4ETS, airbag, A/C. Mercedes-Benz can have up to 47 control units. You can NOT diagnose them with a simple OBD-2 scanner.

Can you erase a fault code on a Mercedes Benz?

Can clear fault codes. Can read and erase all fault codes on Mercedes-Benz cars. Only works on MB but can perform further troubleshooting including SBC brake systems, convertible systems, Air Conditioner (A/C) system. 3. Mercedes-Benz Star Diagnostic DAS This is diagnostic scanner used at Mercedes-Benz dealerships.

What causes a Mercedes Benz to not start?

In most cases you will get a fault code related to one of the following: 1 ECM / PCM computer failure 2 Camshaft position sensor 3 Shifter Selector module 4 Fault codes related to driver authorization or immobilizer 5 Electrical problems

What are the problems with a Mercedes Benz?

Top 5 Mercedes-Benz no start problems 1 Engine Click, No Start 2 Engine Dies Right After It Starts 3 Car turns over, but it won’t start 4 The car makes a clicking noise but won’t start. Hint: Starter Problem or Low Battery 5 Key will not turn the ignition More …

What are the diagnostic pins on a Mercedes SL R129?

The first being either through an 8 pin (X92) or 16 pin (X11/4) square block fastened to the bulkhead. There were actually only14 diagnostic pins on some 16 pin X11/4 models as slot 2 was a small momentary push button and slot 4 was a small red LED used to read out fault codes flashes.

Why does my Mercedes Benz make a clicking noise?

It requires electrical power to crank the engine. The car makes a clicking noise but won’t start. Hint: Starter Problem or Low Battery This may seem obvious, but an old battery is the root of many headaches and can cause all sorts of malfunctions on Mercedes-Benz cars.

What kind of engine does a Mercedes SL 320 have?

SL 320 with a M104 3.2 L 24-valve DOHC I6 (170 kW (231 PS; 228 hp) at 5,500 rpm). Only the 280 was available with a manual gearbox. SL 500 and 600 continued with their respective engines. A second facelift, introduced in late 1998, comprised new external mirrors, 17″ wheels and new bumpers. Also new were the engines,

When did Mercedes Benz stop making the 300 SL?

This article is about the 1989–2001 300 SL (R129 model range). For the original 1954–1963 300 SL (W198 model range), see Mercedes-Benz 300 SL. The Mercedes-Benz R129 SL is a roadster which was produced by Mercedes-Benz from 1989 until 2001.

Why does my Mercedes SL Class make a clicking noise?

Uneven tire wear and unusual handling in turns can be caused by worn suspension links. Check your rear rearward upper link. A light clicking noise from your rear suspension over bumps can be the result of worn sway bar links. Is your rear ride height lower than normal or do you want to install lowering springs?

What to do if your Mercedes SL Class R129 is running rough?

Check your charging system. If your engine is running rough and misfiring you may need to change your cap, rotors and wires. If your valve cover gaskets are leaking we will show you how to replace them. Engine running lean/rough. Maybe you have a vacuum leak. If you engine is only running on one bank of cylinders you may have a bad coil.

What kind of speed does the Mercedes 300 SL-24 have?

Truly the 1989 debutante 300 SL-24 should be renamed 300 TLS, or “Touring Luxury Sport,” as comfortable speed is its apparent priority. To exceed 150mph, a 1991-2 Mercedes SL customer must opt for the V8.

How much does a Mercedes 300 SL cost?

The basic range of Mercedes SL offerings in the UK comprises an SOHC 6-cylinder 300SL of 190 bhp at a sniff under £50,000 (49,960); the 300 SL-24v tested here at £54,460 and the 32-valve V8 of 326 bhp at a list £70,090.

Which is 24 valve Mercedes Benz 300 CE?

The 24-valve unit (M104) has been experienced by Motor Sport in the 300 CE and we admire this tough 7000 rpm unit considerably. The overhead camshafts are chain-driven, the crankshaft is of tempered steel and the undersides of the pistons received a cooling balm of oil sprayed from beneath.

What happens when you turn off the engine on a Mercedes diesel?

When you turn your key off, electrical power is interrupted and the engine quits immediately. Since a diesel engine does not run on electric spark, the engine has to be shut off by some other means. When you turn the key off on your Mercedes diesel, you may have noticed that the engine will not quit immediately.

Where does the vacuum go on a Mercedes 300D?

In all Mercedes diesel engines from the first 300D in 1975 up to the mid 1990’s, vacuum (suction) is used to turn the engine off – not electricity! In simple terms – there is a valve mounted on the rear or side of the diesel fuel injection pump. This valve has an arm attached to it that goes down inside the pump.

What’s the black line on a Mercedes vacuum?

The black line supplies the vacuum reservoir tank. Please note that you need to check the green line with the yellow stripe. This line is the most common line to have multiple leaks due to all the dash pod units controlling the HVAC system. If it leaks, just plug it off for now.

How to check the Diagnostic Code on a Mercedes?

Connect the code reader cables to pin 1 for the black or ground connection and pin 3 for the 12v supply on the 38 pin diagnostic socket. Select your chosen test point (module connection) to test from the following 38 pin socket diagram and connection pin-out table. 2. Turn ignition on, engine not running. 3.

What is the Diagnostic fault code for Mercedes Benz?

Mercedes older series diagnostic fault code reading. W124.R129 1980’s – 1990’s era As you are reading this you will probably be wishing to extract a fault code or clear a fault indicator lamp from the dashboard of your older Mercedes Benz model vehicle.

How to find DTC number on Mercedes Benz?

1. Turn on the ignition (engine not started) 2. Press and hold the red button for about 2-3 seconds and release. Count the number of lights and write them down. This is your DTC number. Continue until the light count repeats itself. No light flashes or 1 flash indicate no code is stored. 3.

Where are the counting flashes on a Mercedes?

Counting flashes activated by grounding individual pins continued through the square block connectors to the 38 pin round X11/14 diagnostic socket to about 1994. This was commonly located within the ECU box and was accesses by removing a sealed access cap.

When did the Mercedes Benz 500SL come out?

For the U.S. market, the R129 was sold with two different DOHC inline-sixes, two different V-8s, and a V-12. Each model had its charms, but our favorite was the 500SL (a.k.a. the SL500 after Mercedes switched its naming scheme in 1994) with the M119 V-8. Sold between 1990 and 1998, this DOHC 5.0-liter was ultrahigh tech for its day.

What kind of wiring does Mercedes 92 500SEL use?

On 92 500SEL I used heat resistant wiring, heat shrink tubing, friction tape, epoxy. The job was very labor extensive and took me around 8 hours. Some plugs could no be saved as plastic was very brittle. Metal contacts were reused and new wires soldered directly to them. Finished harness looked close to factory and worked without any flaws.

What was the Mercedes Benz SL in 1990?

The R129-generation Mercedes-Benz SL debuted for the 1990 model year to tremendous pent-up demand. Its predecessor, the R107, had languished in production for 18 long years, and the new model was a quantum leap in design, engineering, safety, and performance.

What does it mean when your turn signal is not working on Mercedes?

In newer Mercedes models, you will get a warning on instrument cluster stating “Turn Signal Left / Right / Front / Rear / Side Malfunction”. Depending on the Mercedes model and problem a warning may or may not show on the dashboard.

When did Mercedes stop using blink and flash diagnostics?

Mercedes were in parallel developing their own digital diagnostic system and not following the industry standard of OBD1/2. From August 1995 production date Mercedes phased out the analogue type of flash/blink diagnostics in favour of their propriety digital code reading system.

What are the most common problems with a Mercedes?

It is the associated parts that usually fail due to age and high mileage Unknown battery drain, electrical shorts, blown fuses – these can be difficult to isolate! One of the most common problems we see on older Mercedes. Top problems for diesel owners. Kent recommends starting with the basics Yes, Kent has seen it first hand. Don’t neglect this!

Why are my shift controls leaking in my Mercedes?

You CAN do this yourself if you have the right information and equipment! High Mileage and age can raise havoc on the shifting patterns of an automatic transmission. Even if the fluid has been changed on a regular basis, they still wear out. Seals harden and leak both internally and externally. Vaccum and cable shift controls leak and fail.

Is there a problem with the Mercedes possition sensor?

Mercedes-Benz throttle body or throttle position sensor found on C-Class, E-Class, S-Class, CLK-Class, SLK-Class may fail causing idle issues, no idle or poor acceleration. Symptoms of defective Mercedes throttle body or throttle position sensor include: A common problem that you may notice is that the car drives fine under normal acceleration.

When was the last year Mercedes Benz made the 380SL?

1985 was the last production year for the 380SL making it a fine choice as a collectible. | In 1980, Mercedes-Benz revamped its SL lineup of sporting luxury convertibles with the introduction of t… More Info › This is an astonishing 1985 Mercedes-Benz 380SL located in Grand Ledge, MI.

What was the problem with the 1985 380SL?

The ’85 380SL had Bosch Platinum spark plugs–replaced them with NGKs. Intake, timing, and flow have all been monitored–no apparent problems. The diaphrgam and its “control arm” (if you will) sometimes get sticky/stiff…but not consistently. Fuel pump and fuel pump relay have been changed. Coolant sensor has been changed.

How many horsepower does a Mercedes 380 SL have?

Specs datasheet with technical data and performance data plus an analysis of the direct market competition of Mercedes-Benz 380 SL (aut.

How often does Grandma drive her Mercedes 380SL?

Grandma literally drove it once a week to the beauty shop for 20 years–has never even taken the top off. Grandson drove it around town and on the highway, and had TONS of things done to make up for the sludge of it sitting/running at low speeds for all those years.

Why does the battery light come on on my Mercedes Benz?

The message log still indicated a red battery but there was no battery indication on my display. Turn the car off and back on clears the message log. Any thoughts as to what might be going on? Ok, so I had the rear battery replaced and drove about 8 miles to work and no battery light. Drove another 2 miles on my way home and the light comes on.

Where are the Bas lights on a Mercedes Benz?

If your battery died or you recently replaced the battery, there is a good chance the ABS/ ESP / BAS lights are illuminating on your instrument cluster. To reset the lights, start up your Mercedes-Benz and turn the steering wheel all the way to the right, then all the way to the left.

Where is the SRS light on a Mercedes Benz?

This is located on the lower left side of the control panel on the driver’s side of the car. Find the port that fits the OBD cable and plug the scan tool’s cable into this port. 2. Put the key into the ignition and turn it to the “Run” position. This is the position just before the engine starts.

What kind of battery does a Mercedes Benz have?

The starter battery is good (bought 2 years ago), the rear batter is at 50%, and he alternator is charging at 14.3V. Incidentally, the battery light was not on when these checks were done.

Do you need OBD2 scanner for Mercedes Benz?

And let’s face it, Mercedes mechanics tend to charge high prices for simple diagnoses and fixes. There’s a solution though: equip yourself with the best OBD2 scanner for Mercedes. In addition to doing your own diagnostics, you’ll be able to fix minor issues that don’t need a professional mechanic.

Where are the transmission codes stored in a Mercedes?

Specific codes related to the transmission are stored in the TCU (Transmission Control Unit) and come generic codes such as P0705 are stored in ECU (Engine Control Unit). You don’t need to pay anyone to read the codes; you can retrieve them yourself in a couple of minutes with the right OBD II scanner.

What kind of diagnostic system does Mercedes use?

This is because the protocol or access language is specific to Mercedes. About the only system capable of reading and accessing the majority of codes through the Mercedes proprietary system is the Carsoft V12 system. This is a Mercedes single model diagnostic tool made in Belgium.

What kind of communication system does a Mercedes Benz use?

Without going into too much detail this new system used ISO9141 communication protocol to access the vehicle electronics via a common communications module. This used both a K-line and L-line connection and Mercedes own communications language to access the system.

How to ask a Mercedes mechanic a question?

Ask a Mercedes mechanic online. Verified Mercedes mechanics are online around the clock and ready to answer your question online or by phone. Ask-a-doc Web sites: If you’ve got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers… Justanswer.com.

Is it easy to repair a Mercedes Benz?

Whether you’re new to Mercedes Benz ownership or are a veteran, one thing that never changes is that Mercedes repairs require specialized expertise. As one Verified Expert on JustAnswer puts it, “They are a different animal. Sometimes it’s as easy as a fuse, others it’s as complicated as communication system errors.”

Is there a 1992 Mercedes Benz 500 SL?

Yes | No 1992 Mercedes-Benz 500 SL Specs & Features Based on lowest-priced style. Safety information is currently not available for this vehicle. Please check back in the future.

Where can I buy a 1992 Mercedes Benz?

Gateway Classic Cars Milwaukee is excited to offer this 1992 Mercedes Benz 500SL convertible. Mercedes Benz is widely known for manufacturing some of the finest mass- produced luxury cars in the wo…

What kind of engine does a Mercedes 500SL have?

Attractively presented in Signal Red with a matching hardtop | Smart interior in Cream and Charcoal with polished veneers | Powered by the M119 5-litre, 32-valve V8 generating 322bhp | Four-speed a… More Info › This is an absolutely gorgeous 500SL!

What kind of diagnostic kit does Mercedes use?

This is a Mercedes single model diagnostic tool made in Belgium. Its kit consists of a 7.2 interface module, selection of leads (for all MB models) Operating USB security dongle and Carsoft V12 PC software. I will cover the use of this diagnostic equipment in another post shortly.

Navigation