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R129 blink codes

Messages: IMDNov 18, Has it been jump started from another vehicle, or has the battery been charged without being disconnected?? A yes to either of those questions, and you are possibly looking at a roof ECU repair Alex CrowNov 18, Messages: 16, The roof bar just needs to be reset Does it move with the button?

If so you need to take that up and down three times.

r129 blink codes

If not then it needs to be plugged in. When I got to the car this morning, it wouldn't start, with just enough power for the dash lights to be on and the starter motor to click over. The roof and roll bar switches were lit constantly. Whilst away, my friend just started the car as normal, no jump start etc. So, the AA arrived and connected a tester pack and then a charge pack, as per usual.

No jump start. The car then started, but I replaced the battery, as he said it wasn't holding charge properly. So, yes, it was charged connected, but the switches were lit even before he arrived, when the battery had been drained.

Hi Jay, nothing moves. I reset the windows, but the red lit roof switch does nothing when pushed either way, neither does the roll bar switch. I tried holding the roll bar switch in the up position and the down position, but the lights stay the same and nothing changes. How do you re set the roll bar?Apart from indicating more work to do, I began to wonder if I had disturbed anything when I had replaced the front springs or even earlier, the suspension top mounts.

I went about my business on that day driving the car with the fault lights illuminated, they would pop straight on as soon as the key was turned and would not clear down on any number of engine re-starts. I had noticed disappointingly, that I had also lost 5th gear 5 speed version of the R with electronic control overdrive gear and also cruise control operation. This underlined it was a speed signal fault but I would have to investigate further to narrow the field.

This vehicle being the model SL it had the Mercedes proprietary diagnostic communication system, accessed from the 38 pin diagnostic socket inside the ECU box next to the bulkhead firewall. You can read more about early MB diagnostic systems in this post. The first read of the ABS system revealed a recorded fault code with the rear left wheel speed sensor C Rear wheel sensor plausibility.

On removing the road wheel and checking the cable routing, all looked well. Often the older series of Bosch wheel speed sensors have a habit of collecting large amounts of iron debris on the sensing tip over time, causing impulse read issues at low speeds. I removed the sensor from its mounting hole on the rear hub carrier and inspected the tip.

It was not too bad and looked in good order. I had previously measured the sensors static resistance of ohms 1. A quick check to chassis ground, from either of the two sensor wires just proved that there is no chafing of cables to the vehicle chassis.

It all looked electrically good, so investigations continued. The technique here is to remove the single hex cap head fixing from the sensor and spray penetrant all around the sensor. Push a screwdriver into the clearance hole of the sensor tab and begin to work it, levering very slightly to and fro, very carefully. Continue application of penetrant. Eventually the sensor should be able to worked out from its hole.

If you have not done so already, unclip the cable from the three snap clip mounting points behind the backplate to facilitate easy removal. I shone a torch into the hole where the sensor is mounted to reveal the reluctor ring.Honda City helped make these videos. We are still working to obtain content for your car, however the video above is believed to have similar characteristics as your car.

A check engine light can indicate a broad spectrum of problems with your Mercedes-Benz SL In some cases you need to pull over immediately to prevent damage while in others you merely need to tighten you gas cap next time you stop in order to reset the service engine soon light.

The video above shows how to locate the on board diagnostics OBD plug on your SL, how to read the trouble codes and how to reset or clear the check engine light using a scanner on your SL Intermittent Check Engine Light: If the check engine light on your SL is intermittent, try to take note of the conditions when this happens. For example, does it happen when you accelerating, driving on the highway or does it appear at low speeds?

r129 blink codes

This will help your mechanic evaluate the issue. Steady Check Engine Light: If your check engine light is on every time you operate your SL, you need to have it checked as soon as possible, especially if you notice performance problems or unusual noises.

Flashing Check Engine Light: If your check engine light is flashing, stop driving your SL and have it towed to your nearest mechanic - you probably have a very serious problem with your car and you risk ruining your engine by driving it.

If you are unsure about what your diagnostic trouble codes mean; have your SL diagnosed by a professional automotive technician.

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If your car is leaking a small amount of power steering fluid - see this video on how to fix the leak. Dirty cabin air filter cause undue wear on your car's heater and AC and can cause bad odors. Learning how to jump your car before you need to is an excellent idea. Getting Started Prepare for the repair. Scan for Codes How to scan your vehicle for trouble codes. More Info. Additional information on check engine lights.

Video Description.

r129 blink codes

Other videos you might find helpful. Quick fix for minor power steering fluid leaks If your car is leaking a small amount of power steering fluid - see this video on how to fix the leak Mercedes-Benz SL 5. Change your cabin air filter! Dirty cabin air filter cause undue wear on your car's heater and AC and can cause bad odors Mercedes-Benz SL 5. Replace an interior fuse Got a short fuse? Don't blow a fuse, change it! Proper jumpstart procedure Learning how to jump your car before you need to is an excellent idea Mercedes-Benz SL 5.

Fix minor oil leaks Learn how to diagnose and fix minor oil leaks in your car Mercedes-Benz SL 5. The Right Parts. Full list of part and tools.

Download Mercedes-Benz owners manuals.I set the hard top on loosely to check for fit; could I have depressed the latch which now needs resetting before the top will lift? Lower your driver side window and hold the button for seconds then release.

Raise the same window and hold the button seconds. The repeat with the passenger window. I'm going from memory so let know if it doesn't work. I'll try to locate the article from the service manual. After you lower and raise each side - then hold BOTH window close buttons together for 3 to 5 seconds.

Possibly the same function resets top also on earlier models of SL. Neither worked. Could my "latch" question be the issue? Roll bar seems fully recessed. Later models of SL's have auto hard tops. Just guessing - your model of SL probably has a similar type system that must be switched for proper installation of the hard top. Some people just put a small wood chip in the switches to keep them always "on".

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This crude but simple work-around may solve your problem. Found those switches. They have short lever toward the rear. Can't seem to raise or lower the lever, even with pliers. Levers are almost horizontal. Any idea what correct position is to allow raising the top?

On later model SL's - both switches need to be depressed for the top to operate. This is usually accomplished by having the cargo cover in place and closed. If it is open - the computer thinks the trunk doesn't have room for the top so it will not operate.

Your model of SL does not have the retractable top, but probably still has a similar type system. Prob solved! Rear latch WAS in the closed position so control "thought" incorrectly.

Mercedes-Benz SL-Class (R129)

Managed to reset manually to "receiving" position and then did your reset procedure, and GuruZGF5P answered 2 years ago. GuruWCB7P answered about a year ago. How did you get the rear latch into the proper position? GuruDQ6LN answered 11 months ago. How do I get the top to close on a Mercedes slthe battery was low when I started to let down the and it went part of the way.

I changed the battery and the roll bar light and up and down light is on but top will not go up or down. GuruH47ZM answered 9 months ago. Sporadically this happens.

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Sometimes after a while the computer may reset and I can put the top back up using the button. The manual has a manual way to do it, but references a tool that I do notOriginal Poster. Search My Stuff What's New 3 12 24 Buying an R Any advice would be appreciated, and does this look over-priced? I had a R SL for years. Great car. Try it out but for my money, I'd look for a I know 3 litres is a lot but the car weighs a lot and it can feel slightly asthmatic under load.

Check that the hydraulics on the hood work perfectly - they are a pig to sort out. Check it through three or four cycles. Also ask to see the spanner which you need if you need to resort to mechanical fixing of the hood. Check the hard top for storage damage, especially on the rear edge and that the rubber seals are in good nick. Also check the entire suspension especially the front shocks and springs. The battery should be in top order; if not, replace asap as bad things happen with low juice - see hydraulics above.

You change the standard set up at your peril in my experience - you might get "firm" but it is at the cost of the refined ride generally, which rather misses the point of these cars.

How to Reset the SRS Light on Vehicles

I see I also changed the engine oil every six months or so. As suggested above, apart from the hydraulics, the big thing you need to watch out for is the steering set up which does get progressively sloppier over time, if not kept under review. It is, after all, a relatively heavy car and the box and idler are prone to wearing badly.

Zonergem 1, posts 44 months. If it's not too far away I'd try this for comparison and keep the difference in price as a fighting fund. Flip Martian 12, posts months. I was looking at that one in the OP too this evening.

Looks at least like its worth seeing. The dealer sounds like a car enthusiast and there's lots of info there and on their website about the car. Price perhaps just reflects that its had most major work done that's needed doing. Only an inspection could confirm that of course but if its nearly 9k and saves you 4 or 5k's work, then its perhaps worth it.

For me though, it was a bit too early. Although to be honest, that analogue instrument panel seems quite "classic" compared to the electronic mile gauge that came after. If you thought paying 9k for a k mile SL was alright then you should be biting the arm off this seller. Willwors 51 posts 80 months. FSH is a must on an R; I wouldn't go for something with part.

If it hasn't been looked after correctly in the past, you'll never catch up, and it'll cost a fortune to sort! I agree that full service history is very desirable - I would only stress that it doesn't innoculate you against big bills to come. Unless it's all just been done and you have the invoices to hand I think you have to budget for a baseline service for any R To really do it properly you're talking all fluids, filters, brake fluid and pads, coolant, a nice new battery, spark plugs, four or five new tyres.

You won't see much change out of for that lot and if you need two new distributor caps on a V8 then add another on top.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. Well the alternative information source you have been looking for is here, hopefully clear and accurate enough for your needs.

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I have collected the following information together in one place to save the frustration of trying to locate and find most that you would ever need to tackle this job. I will not repeat what has already been expertly written on this subject, you can find links below to these sources to expand on what I have noted here. All was needed was a paperclip or short banana plug jumper to ground the required pins and simply watch the number of flashes.

Codes are resolved from comparison of flashes to fault codes on a written list. This was commonly located within the ECU box and was accesses by removing a sealed access cap.

The reason behind this was that MB at the time had to comply with export requirements that necessitated access to emission data through OBD standard protocols.

At this time Mercedes added the OBD port under the dash, in some cases near the steering column just to give access to emission related diagnostic codes, all the other electronic systems were dealt with through the 38 pin socket as before. So very much a hybrid situation was in existence — seemingly done as a quick fix to continue to sell cars in the US. Without going into too much detail this new system used ISO 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. Even though the communications standard of ISO is the same as used on OBD2 systems the way in which it talked to the modules was bespoke — and this is why you cannot use traditional OBD2 readers on systems of this type.

Fortunately Mercedes saw the error of their ways and only ran with this for about a six year window opting to take on the OBD2 standard across the board from Thank goodness! So given the above history there are three primary diagnostic code reading methods actually four that you may come across in the model year window of Please note all dates stated are approximate and for guidance only What is a little confusing is that Mercedes in their wisdom used the 38 pin diagnostic connector for both the analogue and digital systems making it very difficult to visually identify what system you are dealing with — they even used the same pin number allocations to reflect the connection to individual system components!

Select your chosen test point module connection to test from the following 38 pin socket diagram and connection pin-out table. Turn ignition on, engine not running. Press momentary switch for seconds, wait and then count flashes.

Check Engine Light : Mercedes R129 SL 6.0 L 389 hp Gas

Note down the number of flashes on a piece of paper. Repeat the process until the first flashed code repeats. After reading a code, press the momentary switch for seconds then release.

Please note not all pins are loaded in every model, the quantity of available pins depends on model, version and fitted equipment. I have discovered that this period model The one I have! However that is about the extent of any function accessible by this method.

As stated earlier above to read engine codes or ABS codes etc the unit has to be connected to a capable electronic code reader. 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. Its kit consists of a 7. For those fortunate to own post vehicles of the R stable your car should be equipped with a fully compliant OBD2 diagnostic system, 16 pin standard diagnostic port and the capability to be interrogated by most any off the shelf OBD2 reader.

Lucky you! Instead of counting flashes, the AC console displayed fault codes on the two digit LCD temperature display and were cleared by a combination of pushing buttons.

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Information for the reading and clearing of the diagnostic codes of the AC unit for the R can be found on page 90 of the Cs Baum Tools Manual. On total diagnosis it only responds with 4 results, the rest failed to communicate, having selected the 38 pin digital. It look like this software is extremely limited in scanning this particular car. Hi Frank, Like all computer software it is a temperamental interface and you have to get things just right.

It is most certainly not limited but I suppose is to the MB tools but is probably one of the best available tools for older diagnostics.The R was produced as a two-door, two-seat roadster with an automated electro-hydrauliccollapsible textile roofwith a shell-like, colour-matched, tonneau cover.

r129 blink codes

All Rs came standard with an aluminium detachable hardtop that was fitted by folding the canvas roof down and manually attaching the hardtop.

Designed inthe R was based on the shortened floorpan of the Mercedes-Benz W Designed inthe R was based on the shortened floorpan of the Mercedes-Benz W [2] and featured many innovative details for the time, for instance electronically controlled damping Adaptive Damping System ADS, optional and a hidden, automatically extending roll-over bar.

The R's somewhat dated rear suspension with semi-trailing arms gave way to a modern multi-link axle. The number of standard features was high, with electric action for the windows, mirrors, seats and hydraulic convertible top. This car has a distinction of being the first passenger vehicle to have seat belts integrated into the seats as opposed to anchoring to the floor, B-pillar, and transmission tunnel.

Starting in for the model year, R were re-designated. For example, SL became SL Starting in model yearMercedes-Benz offered special SL models from time to time, such as the Mille Miglia edition cars of model year or the SL edition of model year During for model yearcars were the first year to have an option of the panoramic roof. Also newly available:. There was a choice of 5-speed manual or 4—5 speed automatic for the six-cylinder cars; the V8 and V12 could only be ordered with a 4-speed automatic gearbox.

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In autumn Mercedes-Benz rearranged names and models. Also, the SL and SL were respectively replaced by:. Only the was available with a manual gearbox. SL and continued with their respective engines. A second facelift, introduced in latecomprised new external mirrors, 17" wheels and new bumpers. Also new were the engines. The new Mercedes Benz R roadster was first introduced into the Australian market with the SL and SL models with only the eight cylinder variant being available throughout the entire production run of the R model Not all engines were offered in North America.

For model yearthe SL was additionally introduced stateside. Front suspension Independent damper struts with separate coil springs and gas-pressurised shock absorbers, triangular lower control arms with anti-dive geometry and stabiliser bar. Rear suspension Independent 5-arm multilink with separate single-tube gas-pressurised shock absorbers and coil springs, geometry for anti-lift, anti-squat and alignment control, stabiliser bar.

Front suspension Independent damper strut with anti-dive geometry and stabiliser bar. Separate shock absorbers and coil springs. Negative-offset steering. Rear suspension Independent 5-arm multilink with geometry for anti-lift, anti-squat and alignment control and stabiliser bar. Steering Recirculating ball with speed-sensitive power assist and hydraulic damper.

Mercedes codes reading with blinking LED

Steering wheel turns lock-to-lock 3. Brakes 2-circuit hydraulic power-assisted 4-wheel disc. Ventilated front, solid rear brake discs.

Mercedes Fault Codes List

Antilock Braking System ABS ABS senses impending wheel lock-up under heavy braking and pumps the front brakes individually or the rear brakes together to help maintain stabilityas needed, up to 30 times per second to prevent lock-up and maintain steering ability.

Sold from toit used a 6. Only 85 cars were made. It was a bored out version of M 6. Produced between and in units.


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